Judging by the lack of wordy, detailed comments, it's safe to say that public transportation in Beloit is a flop. Some people don't even realize it exists. Really, everything is within walking distance, with the exception of Wal-Mart (though it is rumored some people have ventured so far). And with the college driving you all over the place once a week, you don't have any room to complain.
The lack of an efficient public transportation system reflects the lack of need for one. You'll make friends with a car-owner and make him or her drive you to Wal-Mart or the movies when it's convenient for the both of you. If you are aching to get the H out of town, Van Galder will help you out with that, offering services to and from Madison and Chicago. And those bus drivers are the nicest people in the world. The bus stop is a bit of a walk, but if you ask nicely, security will grudgingly give you a ride.