I taught myself to code and built a free interactive course to learn prompting — looking for honest feedback

Hey IH,

I'm a self-taught developer switching careers (currently working a night-shift security job in France, building this on my time off). This is my first real shipped project: Prompt Lab, a free interactive mini-course that teaches prompting by practicing live — you do an exercise, get instant explanatory feedback, move to the next lesson.

It's 6 lessons: why a prompt works (or doesn't), being precise without being long, giving useful context, few-shot examples, breaking down a complex task, and iterating/correcting.

Built with Next.js + Tailwind, deployed on Vercel. By default it's completely free — the exercise feedback runs on a rule-based engine, so zero running cost on my end. If you want more nuanced grading, you can also plug in your own Ollama API key to have exercises graded by an AI instead — I picked Ollama for its generous free request quota. The target audience is people who already use AI tools but do it without much method.

I know the default feedback engine is still basic on lessons 2-6 (simple pattern matching) — that's exactly what I want real feedback on before refining it.

Link: https://prompt-lab-pearl.vercel.app/

What would make you actually recommend this to a friend who's new to prompting? Brutally honest feedback welcome — this is step one of a bigger reconversion, so I'd rather know now what's not working.