Keep asking "Why" (LLMs are great for this!) until you're satisfied. There are other learning tips for other areas (e.g. immersion for languages), but I think

Keep asking "Why" (LLMs are great for this!) until you're satisfied. There are other learning tips for other areas (e.g. immersion for languages), but I think that one works quite well for STEM fields. I also like to do organised notetaking via Obsidian, not because I read the notes super often but because the act of organising (and building flashcards while I'm there) is very effective at building understanding.