Besides, you will have to take circuits in college. Why do it now, too?
"The Art of Electronics" by Horowitz and Hill is probably the best "textbook" ever written on practical electronics - it might not be ideal beginner material though.
I always recommend Grob's "Basic Electronics" to beginners (http://highered.mcgraw-hill.com/sites/0072988215/information_center_view0/) - note that this is a textbook for college level "Electronics 101" type courses, as such, a new edition will not be cheap (so shop used). That, and a set of Forrest M. Mims III's "Engineer's Mini-Notebooks" (http://www.forrestmims.org/publications.html).
@Daanii I have two arduino Duemilanoves and love them! I just feel that if I had a stronger understanding of electronics I could go to new heights with them.