Don't ask them to teach you, ask them to make a self-study syllabus/roadmap with online references. It's likely that it ingested the work of others in exactly this scenario, so it shouldn't confabulate as easily.

The same way you double check with any other method you prefer? Duh.

LLMs are vastly superior to compile and spread knowledge than any other thing preceding them.

Hallucinations has made huge progress over last 3 years