Did you check some of the songs on the beginner's guide:

http://www.guitartricks.com/guide.php


It's kind of a tough decision, because a lot of the songs that are easy are going to be pretty boring for 2-4 minutes.


If you go to guitartabs.cc, there are whole song tabs (we only do partial songs here). How about led zep dazed and confused? that is pretty easy.