As noted by all the other reviewers, the Super Cub is a great plane for beginners and novices. It's durable and has a large 480 size electric motor and propeller. See the other reviews for all the details.
It doesn't include the newer technology brushless motor or Li-Po battery though.
What no one mentioned however is that anyone thinking this kit contains EVERYTHING a beginner needs to "teach yourself to fly" is in for considerable frustration and expense. The included manual gives only rudimentary flying instructions and the CD is basically good just for preparing the plane for flight. Without the help of someone experienced in flying a radio controlled plane, it is virtually impossible for a novice to fly any R/C plane without subsequent crashes and even possible complete loss of the plane.
Successfully flying this or any R/C plane requires significant training, skill, and quick reflexes as well as considerable open space (something like 20 acres or more), smooth takeoff runway (we're talking golf green or better), and decent landing area. In some ways learning to fly an R/C is more difficult than a real airplane since your view is third person, outside, and the plane's movements can be very quick and erratic.
Thinking a 12 year old can just be let loose with this kit and somehow learn to fly is naive at best. The promotional material with this kit is just not accurate.
With those precautions in mind, beginners can have realistic expectations as well as a lot of fun with this Super Cub learning to fly.
Update 10-16-08:
Here's a recommendation for true beginners in radio controlled airplanes-
try the Multiplex Easy Star! Now that is finally a plane that actually works! With the propeller in the back you don't have to worry about busted props. And with its giant wings, it almost flies itself.