Here are two high quality sites I found and researched which have simply huge catalogues to choose from. Not only Beginners/Advanced Chords are covered but also Tablature, Alternate Tunings, Bands, Tutors, Beatles, Vanessa Carlton, Madonna, Travis, Coldplay, U2, Norah Jones, and also all musical genres are covered from Pop to Classical too. There's a Search Box on the Music Notes / USA site itself.
I would suggest that you learn and absorb all the basic Chord Families covered in our BellaOnline Chord article which will enable you to cover 100's of songs/artists. Then build up a personal collection of songbooks from which to learn from.