I have been using MindManager mindmapping software for several years now. I am a trainer and love the program. I do believe that it makes me more effective, more efficient and helps me keep information together in a way that might even make me smarter.
Those are all very useful traits to cultivate in yourself and for students, especially college students and high school students that is even more important. This world is not getting any less crowded and students today have a great deal more competition than I had just a couple decades back.
That said buying MindManager as a student is a relatively inexpensive affair as Mindjet, the makers of MindManger offer some great educational discounts through partners such as Campus Tech.
Campus Tech Rates with the Educational Discount on MindManager Product Line
$150 is a great price for this software! The rates for Mac users is very cheap as well.
Now there is one very cool thing about doing research with MindManager in a mindmap form.
It is very easy to recycle and reuse later. I could definitely see a teenager and especially a college student keeping notes in MindManager and using those notes very effectively as they go to work as an intern or kick off their career.
Imagine having a large chunk of your college education immediately at your finger tips! Now, I do understand, one of the reasons for going to college and getting a degree is not only to learn a discipline, but to learn how to learn that discipline and stay on top of a changing landscape.