And use your time effectively. If you understand a concept, don't just keep doing entire exercises in chronological order. Firstly, it doesn't really help with much at all except speed (I'd leave that 'til pre-exam period), and worse, secondly, it lulls you into a false sense of security that you understand the concept when all you're really doing is copy-pasting the method you learnt from the example to every question on the page. Problem is, next time an analysis question comes up, you'll have no idea what to do. As for the whole understanding a concept thing, I guess that's why tutors are for. Doing it over VN or MSN will probly get a bit hectic since you really do need to ask questions for this kind of thing, and it's kind of hard to get all the details you need in this sort of environment.