Tukuk-OS💻 Computers & the Internet
Five micro-lessons · about 36 minutes in total
Packets, passwords, encryption and AI — how the network in your pocket works. Five lessons, about 36 minutes in total — read one at a time; each stands alone.
The five lessons
1. How the Internet Actually Travels
Packets, routers, DNS — and the fact that almost all of it runs under the sea.
2. Inside the Browser
From a typed URL to a rendered page: the 200 ms production line.
3. Passwords, 2FA and Passkeys
Why length beats complexity, reuse is the real killer, and the key in your pocket.
4. Encryption: Math You Can Sit On
Symmetric, asymmetric, and what the padlock genuinely promises you.
5. Large Language Models, Demystified
The next-word machine: what an AI like our chat does, and what it cannot.
Try it live
Further reading
Three real books on this track, from the Open Library catalogue — follow the links for libraries, previews and borrow options.
The research
The most-cited Crossref-indexed papers matching the topic — a window into how professionals actually study it.
- SPSS and SAS procedures for estimating indirect effects in simple mediation models — Preacher (2004), cited 13,893 times
- The Internet of Things: A survey — Atzori (2010), cited 11,816 times
- AFNI: Software for Analysis and Visualization of Functional Magnetic Resonance Neuroimages — Cox (1996), cited 10,535 times