I've used it for just about every aspect of school. From report information, to checking my assigments, to language translation sites, how to make proper bilbiogrpahies, etc...
Even for reports that required book sources, I wouldn't actually ever check any books out I would just find books online that pertained to my topic and copy their information down, lol.
I generally stopped using libraries probably in middle school. So as an education aid or resource, the internet is wonderful. Especially for a student who procrastinates.
Another greatly valued use includes online shopping. I'm able to get many items and products through the internet that would otherwise not be directly available to me. Sometime purchasing through this system is cheaper than through actual store retail or mail order.
One final use that has played big in my internet experience is the exploration of music. Because of the internet, I've discovered many musicians and groups that I like and may have not otherwise discovered. Through the use of the search engine, I've also been able to identify several songs that I liked but never knew the titles of.