Merry-Go-Round
Take a Spin
Hop on the Merry-Go-Round and ride until a puzzle piques your interest. This is the best way to get started if you don't know what you're looking for.
If you know what you're looking for, you can try the search page or maybe the listing of tags. If there's an author you like, you can always view that author's page for a listing of their puzzles.