I'm revising for my GCSEs and one of the best ways to plan my revision is with Remember the Milk. I'm ALWAYS on the computer procrastinating so I have RTM set as my homepage and every day I check to see what subjects to revise for. I created a list called Exam Revision, but I don't just put say, "Econ" and leave at that, I link to sites for revision help as well and prioritize my tasks accordingly. If I have more problems in math than English then I prioritize my math with the good ol' keyboard shortcuts: 1, 2, 3, and 4.

If I'm meeting up with friends for group revision, I can add a location on the map and add it to my subject so I know where and when to revise a particular subject.