Graphic Design Link

The website I found teaches you how to make a 3D logo. It starts off as just using lines and circles but then you have to take it into Effect -> 3D - > Extrude Bevel and it turns all the circles and straight lines into a 3D looking object. There is steps after which make it look better here is the link if you want to look http://www.good-walls.com/2008/06/20/3d-logo-tutorial/