
Problems and Solutions in Introductory Mechanics (David Morin)Selfpublished (so that I could keep the price low) through CreateSpace, 2014, 352 pages. Note: Unfortunately, Kindle's wrapping text ruins the formatting. I therefore recommend the paperback, which looks much nicer and is much easier to read. You can add on the Kindle version for free. If you do buy the Kindle version and read it on your computer with the (free) Kindle app, I recommend using the "Aa" button to adjust the font size and words per line until the formatting vaguely resembles the formatting in the sample pdf files below. 
Electricity and Magnetism, 3rd edition (Edward Purcell and David Morin)Cambridge University Press, 2013. 

Introduction to Classical Mechanics (David Morin)Cambridge University Press, 2008. 
Probability:On the math side of things, an introduction to combinatorics and probability is located here (Version 4, August 30, 2009). This file contains the first three chapters (plus some appendices) of a potential book on Probability and Statistics. It does not assume knowledge of calculus. The first three chapters are titled "Combinatorics," "Probability," and "Distributions." And Appendix B gives a nice little introduction to the natural logarithm, e. 
Waves:The following files are a beginning draft of a Waves book designed for college sophomores. The Fourier and Interference chapters are a little more polished than the others. There will certainly be typos and things that I will change, but there's a lot of nice material here as it stands. There will also eventually be chapters on optics and water waves.1. Oscillations 2. Normal modes 3. Fourier analysis 4. Transverse waves 5. Longitudinal waves 6. Dispersion 7. 2D waves and other topics 8. Electromagnetic waves 9. Interference and diffraction 10. Intro to Quantum Mechanics 
Problem of the week: A set of (very hefty) problems, some of which appear in "Introduction to Classical Mechanics," is located here. Limericks: Many of the limericks in "Introduction to Classical Mechanics," along with ones on other topics, can be found with annotation here. More humor: If you like the limericks, here's some more physics humor. 
Contact: morin@physics.harvard.edu