A growing personal reference, written in plain Markdown and organized as a set of interlinked dictionaries. Each subject is its own self-contained Obsidian vault, built up term by term — small, well-cross-referenced notes designed to make a subject's vocabulary easy to learn and easy to navigate.
Everything here is published so it's reachable from anywhere without authentication, and shared in case any of it is useful to others.
- IT Dictionary — ~690 interlinked notes covering the vocabulary of information technology across 16 branches — computing foundations, hardware, operating systems, networking, the web, data, programming, software engineering, algorithms, theory, cloud, DevOps, AI/ML, media & HCI, standards, and security — with concept maps, study paths, and a cross-IT "false friends" reference for commonly confused pairs. Grown out of the original security-vocabulary vault, which lives on intact as the Security branch.
- Field Manual — hands-on operations & development reference: cheat-sheets, runbooks, playbooks, and reusable boilerplate for the everyday command line, systems administration, and coding. The practical how-to counterpart to the IT-Dictionary's conceptual what/why.
More subjects may join over time, each as its own vault.
The repository is a collection of independent vaults — one folder per subject. Each is a complete Obsidian vault you can open on its own, and follows roughly the same shape:
_Home.md— entry point with a short tourTerms/— one short note per concept (flat)Maps/— Maps of Content grouping terms by areaTemplates/— note templates for adding new entriesConventions.md,How to Extend.md— the format rules and the workflow for growing it
Notes link to each other via Obsidian-style [[wikilinks]]. These render natively in
Obsidian; on the web they appear as plain text, and the folder
structure plus full-text search make navigation straightforward.
Each term note follows a consistent shape: a one-paragraph definition, a Context note on why the concept matters and where it appears in practice, a See also list of related terms, an Often confused with section for the field's false friends, and a Further reading link to a canonical source.
Clone or download the repo, then in Obsidian choose Open folder as vault and point
at the subject folder you want — e.g. IT-Dictionary/. The full graph, backlinks, and
quick-switcher become available, scoped to that subject; start at its _Home.md. Each
subject is a separate vault, so open the subject folder, not the repo root.
Every file is plain Markdown. Browse on the repo's web interface, view in any text editor, or render with whatever Markdown tool you prefer — no special tooling required.
Active and evolving. Subjects and terms are added and expanded over time; existing notes are periodically refined as the surrounding vocabulary grows. Spotted an error or have a suggestion? Open an issue.