Ask ChatGPT o3 about anything you don't understand, ask it about anything in its responses you don't understand. Keep drilling down until you do understand. Takes patience, but you can learn a lot very fast, this way.
Actually, in the past few days o3 has proven fairly unreliable for me. I've gone back to o1-pro. But when I wrote the above it was reasonably reliable.
o3 with a pdf or in deep research mode is excellent. Especially if you’re disciplined about staying to what’s research. But really, it’s excellent, better than benchmarks indicate, I’d say.
I'd worry about learning the wrong things.