Getting Started
What this space is and how it's organized.
Welcome — this is my running notebook of things I’m learning: guides, references, and deep dives, written to be clear first and technical second. The goal is that you can land on any page cold and walk away actually understanding the idea, not just having read about it. Everything’s free, there are no logins, and it grows every week.
What you’ll find here
The library is split into a handful of domains, each colour-coded in the sidebar and on the home page:
- 📐 Math — algorithms and linear algebra, worked by hand: shortest paths, eigenvalues, and the intuition underneath.
- 🤖 AI Agents — how LLMs become agents: the agentic loop, MCP, RAG, skills, and models like OmniParser.
- 🎨 Design — design systems, dashboards, and data-visualization done calmly.
- 🧠 UX — mental models, user behaviour, and the laws that quietly govern good interfaces.
- 🧩 Psychology — how minds actually work: biases, memory, motivation, people, and emotion.
- 🛠️ DIY — build real, working things with little or no code, in a weekend.
- ⚛️ React — frontend notes and quick cheatsheets.
You don’t need to read them in order — pick whatever pulls you in. Where topics connect, the docs link to each other, so following your curiosity usually works better than going top to bottom.
How it’s organized
Each domain is a section, and each section groups a handful of docs. Most sections open with an overview doc that maps the territory — a good place to start if a subject is new to you. New docs appear in the sidebar automatically.
Finding your way around
A few things worth knowing so the site works for you:
- Search anything with the box up top, or just press ⌘/Ctrl + K. It’s full-text, so search by concept (“loss aversion”, “shortest path”), not just by title.
- The sidebar stays focused: only the domain you’re currently reading is expanded. Open another to browse across topics.
- On any doc, hover a heading to grab a direct link to that section, and use the copy button on code blocks. A scroll-to-top arrow appears once you’ve scrolled down.
- Say hi to Bit, the little mascot roaming the page — it reacts to what you’re reading, and it has a home in the bottom-left corner if you’d rather it settle down.
How these are written
I try to hold every doc to the same bar: start from the intuition, show a worked example or a diagram, be honest about trade-offs and where things break, and cite the real source when a claim needs one. If something here is unclear or wrong, that’s a bug — and the whole thing is a work in progress by design.
Start anywhere. 👋