I found a big set of cheat sheets and infographics for graphic designers, and below I've pulled out the ones most relevant to scrapping. (See the full list here if you want.) Gimp shortcuts: https://jeffkayser.com/static/cheatsheets/cheatsheet_gimp-letter.pdf The rest are for Photoshop.... toolbar shortcuts: http://www.hongkiat.com/blog/adobe-suite-toolbar-shortcut-wallpapers/ brush guide: http://trainingonsite.com/images/downloads/photoshop_cs6_brush_guide_2013_02_26.pdf pen tool: http://trainingonsite.com/images/downloads/pen_tool_made_simple_2012_08_19.pdf
I found this list on Adobe's site for Photoshop shortcut keys: https://helpx.adobe.com/photoshop/using/default-keyboard-shortcuts.html There's a pdf you can download, and it's split into mac/windows pages. It's been helpful for me as I'm learning. Thanks for the links above!