ExamTime is a free web service that gives students and teachers a place to organise mind maps, flashcards, quizzes, reports, and class notes. The service was designed for students and educators, and you can use it to store your own notes and class materials, or use it to collaborate with classmates.
ExamTime has specific templates for storing mind maps, flashcards, notes and quizzes, so they're the easiest to add. As you upload them, you build out a collection of study data that's easy to refer back to when you need to brush up for an exam. The service's study planner also makes it easy to build a schedule for your classes and your after-class study sessions, so you can make sure you're studying the right topics at the best times. Everything you post can be made public or private, and shared with friends on or off the service, so comparing notes and quizzes is a snap.
You have to be careful with a tool like ExamTime though — there are so many features and options that you may spend more time organising information than actually reviewing and committing it to memory. However, part of the study process is getting your notes and quizzes organised, and the mind mapping tool makes it easy to connect thoughts and ideas that may have been presented verbally in class. The video above is a good primer, but you can see more examples of how the tool works at ExamTime's YouTube channel. Hit the link below to give it a try.