These are communities in which I belong to and that i've used resources from.

All_Icons~ A site with tons of makes who do icons.
Brush_List~ A community that allows you to view a long and updated list of brush sites. It's always updated!
Cap_It~ A wonderful community that you can view their memories for tons of uploaded caps. I've used many of these and can say that I'm very happy with it. ^^ Thanks to those that I've used caps from.
Caps_Galore~ A site much like Cap_It only I believe has a smaller amount of caps. You can find much of the same thing though.
Crush_Lyts~ A premade layout site created by Kioko and myself. Nothing uploaded just yet but soon we're hoping to have it all set up. XD
Icon_Tutorial~ An excellent community if you want new ideas on how to make icon's.
Everything_LJ~ A great community for all your LiveJournal needs.
Iconistas~ A wonderful community that doesn't hold a knife to your throat to credit. Textures and all kinds of resources at your disposal. ^^
Icons_Of_Laguna~ Laguna Beach Icons, just because...that's all I have to say.
IconTutorials~ Much like Icon_Tutorial, a site that has a bunch of icon tutorials for your icon making needs. XD
Kielli_Icons~ A site full of icons for members only.
Nameless_layout~ A site created by some great and creative people that offers premade layouts. ^^
Psp_Ps_Tutorial~ Tutorials for Paint Shop Pro and Photoshop. XD
DJ_Capslock~ Another caps site for those of you looking for misc movies and tv shows. XD
The_Caps~ Yet another caps site. Can't have enough. ^^
Texturize~ A texture community for those looking for textures (obviously)