If you like to browse library shelves follow the call numbers assigned to physical fields:
3,000 Solved Problems in Physics by 
Einstein's Dice and Schrödinger's Cat by 
How to Teach Relativity to Your Dog by 
Most Wanted Particle by 
Physics of the Future by 
Spooky Action at a Distance by 
The Theoretical Minimum by 
All guides are available under the CC-BY-NC-SA license.
