http://shop.balsausa.com/product_p/426.htm
Here is the link to the Balsa USA Student Trainer. Consider this project just like the old Heath Kit electronic kits, only you end up with a model airplane.
You will probably learn more from this build than any of the other suggested builds.
You could probably get through most of the other suggested builds and end up with a nice flying model, but this one would definitely be teaching you solid building skills.
That's my two cents worth.