If you want to get a head start, here's a few steps I'd take:
1. Buy the textbook you'll be using.
2. Find the current website for the class you'll be taking, and see if they posted a sylabus and homework problems. For example, I go to UC San Diego, so I'd go to
www.ucsd.edu and eventually find this page:
http://www.math.ucsd.edu/~gnagy/teac...ter04/Math20A/
3. Follow the sylabus, learning from the textbook and doing the homework problems listed on the website.
4. ???
5. Profit!