"LLM as Socratic tutor" isn't quite right, because the LLM can't be trusted. But I have had great results with "LLM as debating partner". Basically, I try to explain the thing I'm learning and have the LLM critique me. Then I critique the LLM, because it usually says something that doesn't quite make sense (or I ask it cite its source and it recants its statement). A few rounds of this is (I think) really helpful for cementing my understanding.