In the grocery story, ask the vegetable or meat counter clerk how to cook some item of food. In a restaurant, ask the waiter or waitress what a dish is made of and how it is prepared. Get an American roommate. There are lists of prospective roommates at the UT Food and Housing Office in Kinsolving Dorm or you can add your name to the list. If you belong to a church, join the local one, or at least visit there and get to know a few members.
Some churches have special activities for international students.
Watch the news on television or listen to it on the radio. Try to understand what is being said. Make a list of words, phrases or new stories you don't understand and ask an American friend about them. Pay special attention to idioms. Read the comics in the newspaper.