Can anyone comment on the difficulty level of this book? The one by Daniel Kleppner and Robert J Kolenkow. https://www.amazon.com/Introduction-Mechanics-Daniel-Kleppner/dp/0521198216 I've been thinking of buying it and studying from it, but reading the Amazon reviews has me thinking i should stay away from it, well at least for now. I already know some mechanics from reading Young, Freedman, and Ford's University Physics, and my mathematics is up to differential equations and linear algebra. I should add that although i do know some mechanics, I wasn't very good at solving the types of problems one can expect from taking a course in the subject.