Check out our continuing series "How to Survive in America." This is an excellent resource if you are new to American culture.
In addition, you may find the following articles to be helpful:
Do's and Don'ts of American Student Life
Dorm Room and Bedroom Culture
Personal Grooming Tips for Women
Manners for Overnight Guests at a Family Home
Table Manners for a Typical Evening Meal
Ways to Say "Thank You"