Image editing software - GIMP & paint.NET

I have been looking for and tried out image editing software for my own usage and have spent some time on GIMP 2 & paint.NET as I wanted to learn the 'layer' features.

I have tried on both for a short while, and will definately need to spend more time to learn the power of both as they provided many useful features and effects for editing and enhancing the photgraphs. I really enjoyed very much when I started to be able to make use of layers.

GIMP 2 is open source software and can be download at the following:-
1) Installers for GIMP for Windows: http://gimp-win.sourceforge.net/
2) Documentation: http://manual.gimp.org/
3) Tutorial: http://gimp-tutorials.net/


paint.NET is provided free of charge but you are welcome to make a donation at their web site to support their further development.
http://www.getpaint.net/