nMaker is a free tool that allows you to easily create different textures using Photoshop.
Quixel Suite 2.0 - Workflow Primer
Learn all about the Quixel Suite 2.0 in this extensive tutorial for NDO-Painter, DDO-Painter, and the 3DO GPU baker.
Adobe Keyboard Shortcut Visualiser
Fastprint have created this useful page that contains over 1000 shortcuts for Adobe Photoshop/Illustrator/InDesign.