[ paths ]

Two paths. One rule: everything in order.

A path is a sequence of courses with one outcome at the end. Courses are its chapters — they aren’t sold apart, and you never have to guess what to learn first. What’s real is listed; what isn’t is labeled.

[ path · operating systems in rust ][ 24 graded labs live ]
Write a real x86-64 operating system from scratch in Rust — bootloader, kernel, memory management, scheduler, user mode, filesystem, shell — one auto-graded stage at a time.3 chapters · 31 units · open the path →
[ path · storage & databases ][ in development ]
Understand how databases actually work by building the storage layer yourself — from an in-memory KV store to a queryable SQL engine.3 chapters · 12 units · open the path →

[ note ] courses are chapters of a path, never standalone products — shared chapters count once, on every path they appear on. More systems are on the bench: see the catalog.