Lucky for you, I'm an avid puzzle fan and just happen to have some Logic Puzzle/Puzzle links right in my bookmarks! Yay :D
Logic Problems at Puzzles.com
Logic Problems at Puzzlers Paradise
Logic Problems at CR Puzzles
Logic Problems at All Star Puzzles
All of those sites are excellent sites for all kinds of other puzzles, too :) Oh, and if you like puzzles, you should try out Picross. It's an excellent kind of puzzle that is super addictive. Just do a search on Google and all kinds of Picross sites should come up with puzzles and instructions on how to do them :)
Happy Puzzling! :D