http://www.nsf.gov/crssprgm/reu/
Apply to every REU you find interesting. They made my summers so much more enjoyable. What's better than fully funded research at another university with free housing and travel?
On your application, make sure you emphasize any related skills. Every REU...
(I've been reading PF for years now, and decided I should finally contribute. Unfortunately, my first significant post is a question, but I hope that will change in the near future!)
I'm graduating in May with a double major in Physics and Mathematics, and I have a couple offer for graduate...