So do I, I can quite vividly recall induction day
Its okay to be nervous
To aim for good grades, I suggest you be on top of your work, this means to make sure that you understand everything in class, do your homework and ask for help when needed.
I guess revising for tests would be good, to see how much you've progressed (if any) and then you could work on where your are weakest, make a list maybe
Find out what kind of revision technique works for you, whether it be reading from a book, mindmaps, flashcards, doing stuff etc With me, I find that reading from a textbook/revision guide isn't as efficient as using something like flashcards. However, flashcards take a long time to make whereas you don't really have to do anything with a revision guide, just buy it
Though for some, flashcards seem like a lot to learn and they get put off. I think that with mindmaps, I can't really put much detail into it without cramming all the info and making it off putting. Also find that videos, things being said to me help
If you're planning to revise, make sure that you don't overload yourself with all the info
Do revision with breaks and short bursts of revision will be more efficient than longer ones as you'll hopefully be able to concentrate more. I'm not planning to revise in the holidays, I think relaxing for me would be best (as we have a busy year ahead) and the end of this year has been quite busy to. However, I am going to be making revision notes (flashcards) for my mocks in December but will not actually revise from it
Depending on when my mocks will be, I might start revising in October/November. Then have a break after mocks and start revising for the real exams.