My biggest tip is DO NOT get behind. There will be some much information thrown at you so quickly, it is almost impossible to catch up.
Know that you WILL feel overwhelmed, and know that EVERYONE else does too. It's not you, and soon it will become routine and you will be just fine.
Don't be afraid to ask questions.
Make a good friend or two that you can call when you've forgotten something, or even just to vent!
Read the material before the day you will cover it in class. That way, you can have an idea of whats going on and spend class listening rather that writting notes.
Stay organized, and most importantly, make sure you are having FUN pursuing your dream. It's not all gonna be wonderful, but don't loose sight of the fact that this is something you ENJOY