Like many other open source programs, GIMP (GNU Image Manipulation Program) began as a student project at the University of California at Berkeley. It was developed in 1995 by Spencer Kimball and Peter Mattis and the first version (0.54) was released in 1996.
From the current version (2.10) GIMP has matured to a really incredible image processing program. It's not as complex as Photoshop, but it's not as easy as PC Paint. It competes with all the top dogs in the market today. The best part is that it is free!
However, if you come to GIMP through Photoshop, you may be frustrated by some of the differences. Here are a few user tips to help you get started, whether you are a beginner or a pro.
Tip 1: Read the tutorials
Who has time to read the tutorials? Users of Photoshop, Paintshop Pro or Corel Paint will save some time in this case, because the menus of GIMP are very different. There are over a dozen tutorials on the GIMP Tutorials page on the GIMP.org website. Although I advise you to review them all, you can get started with both of these (including one from another site):
Tip # 2: Reassign the keyboard shortcuts
If Photoshop and its keyboard shortcuts are part of your muscles In memory, you can reassign the GIMP keyboard shortcuts to fit Photoshop's. To remap your keyboard shortcuts in GIMP, select Edit > Keyboard Shortcuts and the dialog box Configure Keyboard Shortcuts opens. Follow the instructions next to the light bulb at the bottom of the window, and then click Save .
GIMP adds the newly assigned shortcut to the correct GIMP menus, so you can always see what they are. Note that some of the keyboard shortcuts in both programs are the same, for example: Copy, cut, paste, etc. – a common CUA (Common User Access) standard.