i think it's great that you're looking ahead...but coming from someone who just finished, i say relax while you still can!!! haha. i think one of the best things you can do is become a cna. first semester clinical will be a breeze if you do (it was for me). it really helps you to gain your confidence and become a better nurse.
the 10 important drug thing...well that's all well and good but the biggest thing you'll learn in nursing school is that memorization is over-rated!!! those meds will have a lot more meaning and practical applications once you start school. right now, they're probably just words in a book. not to mention, the drugs that are "important" change from floor to floor.
your first year (particularly your first semester) you will learn to "think like a nurse." i believe that this is one of the most important things you get out of nursing school. and it's the one thing that you really can't learn from a book!
good luck, you'll do great. all the hard work is worth it!!