College writing is different than any writing you've ever done before. It's deeper, it's livelier, and, supposedly, better than anything you did in high school.
The Guilford Writing Manual is here to help you with your writing skills. It has everything from finding materials to polishing your writing style to why you should want to write well in the first place. Also, there are links to the The Learning Commons on campus and noted scholarly sites at institutions of higher learning all over the world.
However, if you can't find the answer to your question here, don't hesitate to call your favorite English professor. They are here to help you!