The Physics of Waves

This is a truly exceptional book. It is incredibly clear and written in a wonderful way. I strongly recommend it to anyone who wants to clearly understand the subject. I would like to personally thank the author for having written this book with so much attention and care. It is also very nice of him to have posted the PDF file of the book on his web site where you can download it legally and for free (including the book animations)! Just Google: Howard Georgi's home page.

Probably the best wave book. It has the approach Crawford (3rd volume of Berkeley course) has but with a more definite and rigorous mathematical treatment. Very nice to read and with plenty good problems to "have fun" with.

This is a great book, as long as you don't read it so much. If you open it too many times, pages start to fall out. Georgi's super mathematical, so it'll help to know linear algebra and diff. eq. Problems are pretty varied, from easy to somewhat hard. Nothing impossible though.