Envato Market – “Over 3 million digital products created by a global community of designers, developers, photographers, illustrators, and producers.”
I really like their newsletters and their styling. Their weekly emails are full of all sorts of information as well as freebies. I have gotten all sorts of stuff from their newsletters and their site like web/mobile/print/PSD templates, graphics/images, audio files, 3D stuff, WordPress themes, PHP code/scripts, video/audio files, and more. You should sign up for their newsletters and check out their site.