GIMP stands for GNU Image Manipulation Program. It is an open photo editor software tool presented to all for accomplishing the following tasks like Image modification, authoring and picture creation etc. Some of the notable aspects of this photoshop are "Customizable Interface, Photo Enhancement, Digital Retouching, Hardware Support and File Formats".
GIMP tutorial teaches you in detail about all the basic concepts. This tutorial will give you an introduction and help you learn this software online. GNU manipulation program can be adopted as a paint program itself or an instrument to improve the quality of image or a device to reproduce it with high clarity or even an photo format converter etc.