Normal students learn the material from normal textbooks. The Feynman Lectures on Physics are a fantastic supplement and a great reference for people who already have a solid background. They’re not a practical introduction. Feynman acknowledged in his preface that, as an intro physics course, the Lectures were a failed experiment.

Especially as a beginner it’s possible to read along with the Feynman Lectures and think you’re getting it, without really getting very much.

Another way you may hear this same point: “only Feynman could get away with doing things in this crazy unrigorous way. You better do things normal and check obsessively, and understand the normal approach very clearly before you do anything weird.” That’s mostly fair but it’s incomplete. Feynman also checked the living shit out of everything he wrote. He just doesn’t show all the checking, so he appears to be fast and loose.

I agree. It's like a fairy tales book for Physic students. You learn from the main book and just before bed you read one of the lessons, just the relevant one. It's not a book to marathon, unless you have a (almost) complete degree in Physics, or something equivalent.