Oh and give yourself 1-2 hours a day online chatting etc, nothing worse than thinking I must study and have no fun, it makes you resent the exams. There is no reason not to come on here for a bit each day, it will give you an incentive to work, think of it as a daily treat for studying hard.
I found the very worse thing I could do was have my head in the books non stop and do nothing else, just make sure when its study time you do just that. I am sure you will be ok and remember having to do resits isnt always a bad thing so dont fear them.