Start with the published foundation lessons. Every path grows toward practical fluency through worked examples, exercises with answers, troubleshooting, and a capstone. Advanced stages are labeled as planned until their lessons are published.
9 PUBLISHED LESSONSMathematics: quantities, relationships, and models
Start with what numbers mean, then build toward arithmetic, fractions, symbols, and relationships.
Start learning →8 PUBLISHED LESSONSChemistry: matter, atoms, and reactions
Start with observations and simple particle pictures before learning formulas and calculations.
Start learning →8 PUBLISHED LESSONSPhysics: motion, energy, and waves
Start with measurements, models, and movement before working with forces and energy.
Start learning →12 PUBLISHED LESSONSSQL lab: circuit inventory to activation handoff
Twelve small exercises using one circuit inventory. Find missing records, count readiness, and rehearse changes.
Start learning →4 PUBLISHED LESSONSWindows Server & Active Directory
Understand identity, access, DNS, and policy before changing a domain.
Start learning →4 PUBLISHED LESSONSRed Hat Enterprise Linux operations
RPM packages, systemd services, SELinux, and controlled maintenance.
Start learning →3 PUBLISHED LESSONSVirtualization: Hyper-V & VMware
Understand hosts, guests, virtual networks, disks, and recovery boundaries.
Start learning →3 PUBLISHED LESSONSOracle: SQL*Plus, views & RMAN
Learn the difference between querying data and operating the database that stores it.
Start learning →4 PUBLISHED LESSONSSQL Server administration
Inspect instances, database state, permissions, and the backup chain.
Start learning →3 PUBLISHED LESSONSWildFly & JBoss application servers
Understand Java runtime, application deployment, management, and dependencies.
Start learning →3 PUBLISHED LESSONSSplunk: search, fields & evidence
Turn events into an explainable operational view with SPL.
Start learning →3 PUBLISHED LESSONSNetwork services & firewall diagnosis
Trace a connection through names, routes, transport, and application behavior.
Start learning →3 PUBLISHED LESSONSBackups, data transfer & maintenance
Protect data, validate imports, and rehearse service recovery.
Start learning →3 PUBLISHED LESSONSOffice tools for operations
Use Excel, Word and PowerPoint to make reliable reports and usable runbooks.
Start learning →40 PUBLISHED LESSONSNetwork engineering · field manual
Design, physical paths, carrier services, routing, security, service dependencies, measurement, fault isolation and recovery.
Start learning →5 PUBLISHED LESSONSPython: first script to useful software
Learn how programs store information, make decisions, repeat work, and handle files.
Start learning →5 PUBLISHED LESSONSPerl: text, files, and automation
Start with scalars and lists, then turn messy text into structured reports.
Start learning →5 PUBLISHED LESSONSSQL across dialects
Learn relational thinking once, then compare the syntax each database actually accepts.
Start learning →33 PUBLISHED LESSONSNetworking: zero to CCNA
Understand a packet’s journey, build a small LAN, and develop a method for troubleshooting.
Start learning →7 PUBLISHED LESSONSDocker: containers you can explain
Run, inspect, build, and reproduce a containerized service.
Start learning →7 PUBLISHED LESSONSKubernetes: from a pod to an operated service
Learn desired state, deployments, services, and basic diagnosis on a local cluster.
Start learning →8 PUBLISHED LESSONSLinux Sysadmin Bible
A growing operations manual: inspect, change deliberately, verify, and recover.
Start learning → How these guides grow
Weekly updates are scheduled for Monday mornings, rotating across Systems, languages, linguistics, photography, and music. They add the next prerequisite-ready lesson and revise material when the underlying technology changes. Each update records what changed and the sources used. Examples state their environment; a command verified in one system is not presented as tested everywhere.
Update log
Entries describe the site at their publication date. Later entries supersede earlier planned-feature notes.
19 October 2026 · Follow the amount
Chemistry foundations now has an eighth lesson: a complete paper capstone connecting formulas, dilution, sampled portions and reaction mole ratios. Three readiness checks link back to the mathematics and chemistry needed for the exercise. Work through the example, solve the independent problem, then inspect the explained answer and its error checks.
The numerical studies are original hypothetical examples. Atom counts, unit conversions and calculated amounts are checked; no physical experiment or observed yield is implied. The lesson links its concentration, balancing and stoichiometry methods to OpenStax Chemistry 2e. Advanced chemistry remains a future curriculum.
17 October 2026 · Working studies and a shared design
Ear Gym, Sonic Autopsy, Timbre Cabinet and the local corpus workbench now have complete bounded local workflows. Viewfinder adds depth-of-field estimates, Chord Anatomy adds extended qualities and octave placement, and Rhythm Mutator adds an independent pulse layer, longer arrangements and MIDI export. These updates supersede the older planned-function notes below.
The shared masthead, footer, cards and readers now follow one design system. Automated and live HTTP checks passed; device interaction, actual listening and visual review remain unverified.
29 September 2026 · Learn the tool, then use it
The main section hubs and core tools now introduce their purpose, a first task, expected results and limits. Existing starter lessons keep their instruction; three now also have working practice surfaces:
- Viewfinder: sensor/focal-length/distance framing calculations, plus exposure comparisons that separate light from ISO brightness.
- Chord Anatomy: triads and seventh chords, spelled notes, inversions, synthesized audition, saved-B comparison and note-list export.
- Rhythm Mutator: editable eighth-note patterns, rests and accents, 3/4–5/4, swing timing, two-bar synthesized playback, comparison and text export.
Each workbench has a worked study and two checkpoints with explained answers. These are bounded tools, not complete optics or composition environments. Photographic overlays, extended/open-voicing editing and polyrhythm/MIDI features remain planned.
Validation: deterministic geometry, exposure, pitch spelling/inversions, rhythmic timing and snapshot checks. Type checking and the production build are required for publication. Browser interaction, physical camera captures and listening evaluation were unavailable in this pass; synthesized playback is implemented but not listening-verified. Primary teaching references: Nikon focal-length/aperture documentation and Ableton Learning Music, linked at each workbench.
28 September 2026 · Evidence before intervention
Three new operations units are published, bringing the Systems guides to 179 lessons across 22 guides. Each includes prerequisites, a worked incident or lab, expected observations, exercises, reasoned answers, common mistakes and primary references.
Validation: all three Bash files pass syntax checks. A disposable SQLite 3.53.1 fixture verifies the published baseline totals and the business assertion, including wrong rows with an unchanged total, extra rows and missing rows. Composition checks preserve every prior lesson and every unaffected guide. These checks do not execute AD policy, SELinux enforcement, T-SQL, SQL Server backup/restore or DBCC; Windows, SQL Server and an enforcing RHEL VM were unavailable. Each lesson provides the platform-specific acceptance checks still required in a learner’s disposable lab.
Upstream review on 28 September: Microsoft’s Group Policy processing/reporting and SQL Server restore documentation; Red Hat’s RHEL 9 label/AVC guidance; Apache 2.4 Alias and local authorization. Links appear with each unit. Cisco’s CCNA transition announcement still lists v1.1 testing through 2 February 2027 and v2.0 from 3 February 2027; the existing exam baseline is retained.
Published: the three units above. Domain creation/delegation, broader SELinux service policy, virtualization recovery, differential/log restore chains and Oracle RMAN practice remain planned. Next rotation: application services/observability, network services/recovery and Office operations. The owner’s other learning expansions and source-catalog staging queue are unchanged.
27 September 2026 · Mathematics, chemistry, and physics
Three new topics within Systems, now with slower opening sequences: nine Mathematics lessons, seven Chemistry lessons, and eight Physics lessons. Each includes worked examples, exercises, and explained answers. Seven-stage study plans map the future curriculum from novice through doctoral research, with prerequisites and checkpoints. Mathematics introduces ratios, equations, functions, and probability; Chemistry covers matter, atoms, reactions, and concentration; Physics covers motion, forces, energy, and waves. Their lessons also feed Field Facts. Further stages remain planned.
15 September 2026 · Networking, Indigenous languages and the place atlas
Networking now has 33 lessons: 26 new units extend the foundation through IPv6, routing, OSPF, services, security, wireless, automation, troubleshooting and engineering practice, with a CCNA v1.1 objective map. Each new unit includes an explanation, worked example, exercise, answer, common mistakes and references. The Indigenous languages of the Americas guide adds eleven study units and eighteen family reference entries.
The Linguistics menu now shares all 47 language tracks with the practice page, including Finnish and Navajo. False Friends uses compact expandable rows and initially shows six entries.
The Radio / News place atlas is a first published pilot: global place and radio catalogs, shared selection and player, original-language summaries, English/Japanese dictionary lookup and reversible owner corrections. Global news coverage, comprehensive health classification, resident review and contextual language analysis remain in development. Live coverage and collection limits identify the available sources and gaps.
Disposable checks cover the JSON example, VLSM arithmetic, ACL predictions, additive SQL schema, atlas locality/staleness rejection, claim references, dictionary data and CJK/Thai/RTL segmentation. IOS/Packet Tracer, RF equipment, native-speaker review and physical iPhone audio remain untested. Built-Worker integration checks passed for global/pilot search, station streams, Japanese stories, thin coverage, reversible station suppression and unauthenticated mutation denial. Browser preview verified the atlas shell and mode control; full interaction testing was limited by a stalled preview connection.
15 September 2026 · Language foundations and character studio
The language page now has 47 tracks, including all requested languages, separate Hindi/Urdu, ancient/modern Greek and Biblical/Modern Hebrew, with Romanian preserved. Twenty-four new foundation units include a rule, model, exercise, answer, introductory vocabulary and usage notes. Variant guides cover Mandarin writing standards, Arabic, Hindustani, Greek, Latin, Hebrew, Persian, Norwegian, Yupik and Coptic.
The Kanji + Hanzi studio publishes ten lessons, all 214 Kangxi headings, all 2,136 Jōyō kanji with stroke models, 6,432 Japanese and 9,574 Chinese stroke models, and a 103,007-entry reference. Twenty-four authored mnemonic stories and device-local personal notes support recall. Six new script recognition charts explicitly separate letter identification from pronunciation instruction.
Coverage, schema, source licenses, character/stroke integrity and the site build were checked. There was no iPhone interaction test or native-speaker audit of the new foundations. Full courses, comprehensive word lessons, every regional stroke alternative and an authored mnemonic for every character remain planned. Sources and licenses appear beside the lessons and studio. The scheduled rotation and unrelated catalog requests remain unchanged.
14 September 2026 · Nineteen starter lessons and fifteen reference entries
The eight planned Light projects and eight planned Sound projects now open to real starter lessons. Each includes prerequisites, an explanation, a worked example, an exercise with a reasoned answer, common mistakes and references. Interactive tools and personal media collections remain planned.
Light project lessons · Sound project lessons · Speech sounds · Grammar and meaning · History and variation
Earth now has three reference entries each in Dead Air, Same Time, Elsewhere, Local Internet and Time Signals. They identify their primary sources and distinguish archival records and model predictions from personal observations. No travel records or recordings were invented.
Sources reviewed: NIST, NICT, CERN, NASA, Google, transport authorities, Nikon, OpenStax, NDSA, Audacity, Ableton, the IPA and MIT. Exact links appear with each entry or lesson. Checks cover exercise arithmetic, route structure and once-only database insertion in disposable SQLite, including preservation of hidden or deleted entries. Camera capture, listening tests and device workflows remain untested. The next scheduled learning lanes are unchanged.
14 September 2026 · Language, corpus, photography and music
Nine new lessons across three subject courses, plus three German grammar chapters, three sentence-practice units and four German false friends. These foundations are published; advanced course stages and corpus hosting remain planned.
- Corpus design, tokens and counts, and concordances and normalized rates.
- Exposure stops, focus versus motion, and histograms and a contact sheet.
- Pulse and subdivision, scale construction, and triads and an eight-bar arrangement.
- German grammar: complete present paradigms for fahren, lesen and nehmen; participle and prefix classes; relative-pronoun declension and clause construction. Eleven German reference chapters now include worked analyses and new exercises with reasoned answers.
- False Friends: aktuell, eventuell, also and bald; 16 entries in the collection, with a new contextual practice check.
Sources reviewed 14 September: UT Austin Grimm Grammar, Duden, Lancaster's historical corpus survey, Python documentation, AntConc 4.4.2's manual dated 20 July 2026, Nikon education and Ableton Learning Music. The corpus lessons keep synthetic data explicit and introduce reproducibility before inference. AntConc remains a separate desktop tool, not an AUWEN feature.
Validation: exact Python worked programs and the exercise variant passed in disposable files on Python 3.12.14, including context boundaries and empty-denominator behavior. Exposure, time, scale and triad answers checked arithmetically. Grammar forms reviewed against the cited UT paradigms; structural checks are not a native-speaker audit. No camera capture, audio listening test or AntConc installation was performed.
Next lanes: Windows Server/Active Directory, RHEL/virtualization and database operations. Next visits to these subjects will advance another language, corpus normalization and annotation, optics/composition, and musical intervals/harmony.
14 September 2026 · Twelve more practical lessons
Published three additional lessons each for networking, Linux administration, Docker and Kubernetes, plus eight command-reference entries. The Systems collection now contains 74 lessons across 17 guides and 53 shell-reference entries. Every new lesson has prerequisites, explanations, examples, expected results, exercises, answers, failure cases and primary references.
- Networking lessons 5–7: VLANs and trunks, spanning-tree election/failover, and LACP EtherChannel with controlled failure drills.
- Linux lessons 6–8: users/groups and session credentials, narrow sudo policy, and Ubuntu apt versus RHEL dnf transactions.
- Docker lessons 5–7: readiness checks, graceful/forced shutdown, CPU/memory/PID limits and explicit writable paths.
- Kubernetes lessons 5–7: complete manifests, startup/readiness/liveness probes, resource requests and recovery from a stalled rollout.
- Command desk: Get-Service, Test-NetConnection, Get-NetTCPConnection, ps, ss, du, netstat and sc.exe query, with practice questions and cross-shell task links.
Verified in disposable fixtures: sudoers syntax and rejection of malformed policy; file modes; GNU du; Python HTTP-handler responses and TERM/KILL/ignored-TERM behavior. YAML selectors, named ports, probe handlers and resource arithmetic were checked, and networking predictions were checked in a limited logical model. Existing Python, Perl and SQL example checks passed again.
Limits: no Docker Engine, Kubernetes cluster, Packet Tracer, Windows or complete VM administration environment was available. Container enforcement, switch behavior, admission/scheduling, installed sudo permissions and package transactions remain documentation-reviewed lab procedures. Local ss returned partial output because netlink access was restricted; ps could not initialize process lookup. Neither is claimed fully execution-tested. Each guide records its specific limits and target environment.
Sources were reviewed on 14 September 2026 against Cisco’s Catalyst IOS manuals, Ubuntu 24.04 and RHEL 9 administration references, Sudo, Docker, Kubernetes, Python and Microsoft documentation, linked within the lessons. Target-specific behavior is distinguished from general principles. Advanced stages and capstones remain planned; these labs alone do not establish CCNA readiness.
Next in the rotation: language practice and grammar, False Friends/linguistics, and photography; then music and the remaining operations lanes.
14 September 2026 · From examples to checked behavior
Three new published units bring the Systems collection to 62 lessons across 17 guides. Each adds prerequisites, a complete worked example, predicted results, exercises with reasoned answers, common mistakes, and linked primary references.
- Python: validated command-line input — argparse, help and exit status, nonnegative integer contracts, and a one-time transport-charge exercise.
- Perl: subroutines and Test::More — argument copying, whitespace cleanup, boundary and rejection tests, plus deliberately broken implementations to check the tests.
- SQL: joins and row counts — a disposable notebook/entry fixture, inner versus left joins, unmatched records, correct counting, and ON-versus-WHERE counterexamples.
Executed on Linux: Python 3.12.14; Perl 5.38.2 with Test::More 1.302194; SQLite 3.53.1 through Python, using temporary files and an in-memory database. The check suite passed 91 harness checks, including the published exercise solutions; its SQLite check also verifies four worked queries, three answer queries and two incorrect-query counterexamples. This does not claim testing on Windows, Python 3.14, Perl 5.44, or the other ten SQL engines.
Upstream review, 14 September: Python 3.14 argparse adds color and suggestion controls; our example does not depend on those new settings. Current Perl subroutine documentation includes experimental named-parameter signatures; this lesson uses established argument unpacking. Join semantics were reviewed against PostgreSQL and SQLite.
The CCNA transition was rechecked against Cisco’s 1 July 2026 announcement: v1.1 testing ends 2 February 2027 and v2.0 begins 3 February 2027. The guide’s existing baseline remains applicable; no exam-readiness claim is implied.
Published: the three linked units. In progress: their broader learning stages. The next topics at that release were networking VLANs/trunks, Linux users/groups/sudo and apt/dnf, then Docker health checks and process lifecycle; see the later expansion above. Advanced topics and capstones remain planned until lessons actually exist.
14 September 2026 · Operating systems and services
Ten new foundation guides: Windows Server and Active Directory, RHEL, Hyper-V and VMware, Oracle with SQL*Plus and RMAN, SQL Server administration, WildFly/JBoss, Splunk, network services, recovery/data operations, and Office tools for operations. Each includes three lessons, exercises, answers, and a path toward advanced practice.
13 September 2026 · Foundations
Python, Perl, SQL, networking, Docker, Kubernetes, and Linux administration foundation lessons. Eleven SQL dialects in the comparison desk. Shell command reference and the OASYS30AX build plan.
At that release, the next planned units were Python input validation and CLI arguments; Perl subroutines and tests; SQL joins; VLANs and trunks; Docker health checks; Kubernetes manifests and probes; Linux accounts and package management. See newer entries above for published additions and the current next steps.
AUWEN’s teaching standard also applies to language, photography, music, and future subjects: define prerequisites, teach in sequence, practice, check understanding, and build toward independent work.
