I would recommend this book for quantum mechanics: http://www.amazon.com/New-Quantum-Unive ... 400&sr=8-1
It's not a textbook, so it will keep you entertained. It also goes into quite a bit of depth, so some rudimentary physics and chemistry knowledge would be helpful. If you did
want a full-on textbook, you can look at the course listings for your college or university for guidance.