You may (understandably) have pretty low expectations coming into this class. Ugh, a freshman composition class that everyone has to take..... I'm sure that'll be really great........That may be the case, depending on the instructor you're assigned. Or it may not. You might be surprised at what the class can become if you give it a chance.
Assuming the instructor holds up their end of the deal, you should too. The standard guidelines all apply - actually think a little about the assignments, complete them, and turn them in on time. Your instructor should provide feedback on your writing assignments. Take this to heart, learn from it, and incorporate the suggestions in your future work.
The course seems aimed to improve many types of writing skills. You'll focus on academic writing with your research paper and related assignments, and you'll focus on more casual writing aimed at the public with your commonplace assignments. The commonplace editing that you'll do is designed to let you view the writing process from another angle, providing feedback on a piece written by your peers. The blogs, like this one, will give you even more experience writing for a public audience, and let you express yourself creatively in ways beyond standard writing.
Overall, just relax, don't be afraid to think a little bit, and have fun with the assignments. If you find that you like the course and the writing it involves, really get into it. If not, just endure it and it'll be over before you know it.
Good Luck,
-Jake