This is a guide to creating a fantasy landscape using open source (free to download & use) tools:
This guide is meant for advanced users and will not tell you how to create every single thing you see in the picture.
final picture: [link]
If you are about to create your first digital picture, this guide probably wont be for you
If your desktop resolution is 1680x1050 or higher I recommend downloading the tutorial and viewing it in your image editor/viewer for a higher res version.