Reddit reviews Problems and Solutions in Introductory Mechanics

Morin is the way to go. https://www.amazon.com/Problems-Solutions-Introductory-Mechanics-David/dp/1482086921 It has a lot of very good problems of nice difficulty (but not too difficult). Detailed solutions are given to all problems. I highly recommend this book to any physics student. Every single person I recommended this too ended up loving the book and learning a lot.
If you are interested in very difficult, sadistic problems, then the other Morin book is nice: https://www.amazon.com/Introduction-Classical-Mechanics-Problems-Solutions/dp/0521876222/ This contains theory too and detailed soolutions to half the problems.

I am using Conquering the Physics GRE as an overview, but I really enjoy anything from David Morin and David J. Griffiths for the level of questions and explanations (and in-book/online solutions manuals that go a long way towards showing you how to think like a physicist). But my "library" for preparing for the physics GRE is:

CM: Morin, Problems and Solutions in Introductory Mechanics and Introduction to Classical Mechanics

Gregory, Classical Mechanics for extra explanations and problems

EM: Griffiths, Introduction to Electrodynamics 3e

QM: Griffiths, Introduction to Quantum Mechanics 3e

Thermo/Stat.Mech: Schroeder, An Introduction to Thermal Physics

Kittel and Kroemer, Thermal Physics

Waves: Morin, on his website are ten chapters to what appears to be a Waves book in the making

http://www.people.fas.harvard.edu/~djmorin/waves/

Atomic, Lab Methods: Conquering the Physics GRE and any online resources I can find.

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If you email Case Western, they send a link to some amazing flash cards!

Yeah, I have that one. 14th edition. I'm trying to find similar to this book. Btw, had a chat with my former professor about the book Electricity and Magnetism by the same author. I'd like to find more though

No this one
https://www.amazon.com/Problems-Solutions-Introductory-Mechanics-David/dp/1482086921