TASI Guide to using GIMP

GIMP (GNU Image Manipulation Program) is a free open source image editing program with a comprehensive set of tools comparable to those available in commercial software such as Adobe Photoshop.
TASI (the JISC specialist service on digital images) has just published a brand new advice document: Using GIMP software for teaching and research. This guide, also available in a print-friendly PDF version, looks at the GIMP features of most use to those wanting to use images in teaching and research.

Get software for free from: http://www.gimp.org/
Get advice for free from: http://www.tasi.ac.uk/advice/creating/gimp.html

Source: JISC RSC