Formulating a Thesis
How to Quote Poetry Correctly
How to Write a Comparison/Contrast Paper
The Importance of Proofreading
. . .and if you'd like some help with your punctuation. . .
For a good general guide to college writing, you might also consult
Advice on Academic Writing from the University of Toronto.
Here is a collection of sites that cover many aspects of writing (with thanks to the teen chapter of the Midwest Writing Club).