Like Photoshop, GIMP comes packed with a lot of keyboard shortcuts so you can work in the image-editing tool more quickly and efficiently. This cheat sheet reveals them for you.
The keyboard shortcuts cover everything from switching tools to working with layers and navigating the program. Some of the most useful ones include repeat last filter (Ctrl + F), go to the Crop and Resize tool (Shift + C), and Save image as (Shift + Ctrl + S).
Of course, that depends on your workflow, but any way you slice it, this is a handy resource for GIMP users. Jeff Kayser created it for Gimp 2.6, but the shortcuts seem to still be the same for the latest version of Gimp (2.8).
Download the PDF, SVG or PNG cheat sheet at the link below. For further GIMP awesomeness, check out the top 10 tricks you can do with the program.
Cheatsheet: GIMP [Jeffkayser.com]