Typesec

Syntax drills for CLI security tools

Mathemphetamine

Get hooked on math

Lolevel

Full coverage of MIT's xv6-riscv kernel

Infrasec

Learn infrastructure, sysadmin, networking and more

Reflex

Internalise coding until it becomes reflex

Sigvolt

Learn analog and digital electronics

Gradflow

Get familiar with Machine Learning and Data Science fundamentals

Blocksec

Learn blockchain, DeFi and cryptocurrency internals