I honestly just find topics I'm intrested in and ask the LLM. I have multiple long chats running and whenever I have a question about that topic, I continue it. This has honestly given me so much general knowledge, even for the very niche things like subway train software or very useful stuff like giving me tailored advice to improve my sleep.
For more complex stuff, like setting up AWS object storage, it can honestly teach you step by step, that is if you're willing to actually absorb the information.