This page is for finding resources to actually do things with, like brushes, programs, auto-savers, etc. For more nuanced things like tutorials, head to the tips collection.
For my favorite art programs that aren't photoshop, check the art reviews on the left bar.
For some brushes, you can check my program review pages on the left side.
For sites, here are some specific sites I use for brushes:
Deviantart (Photoshop Brushes, sorted by Popular All Time)
Graphic River, photoshop add-ons
, Creative Market, photoshop brushes
, Gumroad: brushes
Watercolors in sai 1
Watercolors in sai 2
Gifcam - make quick gifs easily
Waifux2 @ tumblr - explains what it does, despite its concerning name
Plugin for After Effects
Armature 9 - good rigs for drawing
Palette generator - hit "unlike colors"
Pen Pressure Tool - help customize your pen's pressure curve easier
Create Games at tumblr - lots of tools and such to help game-making
Masterpost of Art Programs
Masterpost of more game resources