This implies that you know which question to ask. If people don't know about accessibility, security etc. How are they able to learn? Also, most people don't use AI to learn but to do it for them.

That's a good point, but if you have an always-on agent focused solely on helping you improve your knowledge/skills, it can ask you questions every day and gradually identify gaps in your knowledge and it gets really good at knowing where to push you.

I'm experimenting with exactly that: https://miletus.app

That's where books come in. Read them, explain what you're learning to the AI, and what interests you about it, ask for it to check your understanding. Explain your other interests, ask it to suggest other things to read which will bridge the gaps between what you're learning now and the other things you already know.

I mean, the frontier models are pretty damn good at giving you all the standard conventions on things... The first question I usually ask is "give me the all the modern day conventions for this use-case", and then I start the context building from there. This applies to a lot of things, but I mainly use it when I am coding.

You can ask the AI what you don't know.