Gimp is an good image editor, and a good alternative to Adobe Photoshop. In this Instructable, I will be showing you how to make a good icon for websites (YouTube, Facebook, Myspace, Twitter, etc.)
Step 1: The Basice
In this step, we will be making the image size.
1) Go to File>New
2) Create the image at 250x250 then click Advanced Options. Under Fill With:, use Transparency
3)You will now have a screen similar to the one below (Third Image)