Free C course called "C Systems Lab"
Ground-up C course for devs who know high-level languages but fear pointers.

Better than pointing non-tech friends to Karpathy videos for transformer basics.
Non-technical professionals wanting to understand LLMs
The Illustrated Transformer · Andrej Karpathy videos
I had generally been pointing them to Karpathy, Illustrated Transformer, and other youtube content but I figured something more hands on without the math requirement might be better at explaining questions like "why matrix multiplication?".
I built this as a simple 60-70 minute interactive course with some demos I could send along to them. I've found it effective as the initial foray into understanding jargon and concepts before they graduate to Karpathy et al.
It's free, no signup required. I would love feedback on where it might lose a non-technical reader, and where someone who does this for a living thinks I have simplified past the point of being correct.
understandgpt.xyz
Ground-up C course for devs who know high-level languages but fear pointers.
Clean visual course for LLM basics, but many explainers already cover this ground.
Side-by-side timestamped notes beat browser extensions for serious MOOC study.
Pretty Fourier demos via Claude Code, but it's a design portfolio, not a reusable tool.
PM-focused API course with in-browser sandbox; solves real knowledge gap but crowded educational space.
Educational article on genomics ML when blog posts masquerading as products should pass.