// learn by building
Understand it from first principles.
Practical, no-fluff guides on Rust, systems engineering, and applied AI — written by the kevalabs team while building real open-source software.
topics
Notes and guides, by topic.
// fundamentals · computers
Computer fundamentals
How a computer actually works — CPU, memory, binary, and the layers between the hardware and your code.
Browse topic → // fundamentals · webWeb fundamentals
How the web works under the hood — browsers, HTTP, DNS, and everything between typing a URL and seeing pixels.
Browse topic → // data · postgresqlDatabases
How data is stored, structured, and protected — just enough database to build real projects now.
Browse topic → // security · authSecurity
Who are you, and what may you do? Authentication, authorization, and safe habits — independent of any framework.
Browse topic → // language · pythonPython
Practical Python notes — the language, its idioms, and the standard library, learned by writing real programs.
Browse topic →latest