For the love of God, don't procrastinate!!! Don't leave everything to the last minute, you will hate yourself for it!
I learned the hard way in Pre-Nursing this year, I had 2 essays and 2 projects due the same week, and the week after that we had our final exams, gosh NEVER AGAIN! Come NS in Sept, I will do things differently!
Start your stuff EARLY! and don't underestimate the good you'll get from studying/previewing/reviewing/clarifying EVERY day because it's much easier to study it smaller bits here and there than cramming all the info in the day before the test/exam. Also, study in different ways, read, write, talk about it, draw it, listen to it, relate it etc. it sticks better!
gosh, here I am giving advice on how to survive NS before I even started it! lol