[vymague]

Isn't that true for any physics or math texts? You need to do problems. That's why there were exercise books to accompany Feynman's lecture.

[AlexCoventry]

I didn't know about the companion exercises. That's great.

[wbl]

Sadly there are not that many availible AFAIK.

[AlexCoventry]

It seems as though there are approximately 300 pages' worth. https://www.amazon.com/Exercises-Feynman-Lectures-Physics-Ri...