Bloomington Shuttle Service (http://www.bloomingtonshu...) offers shuttles to four destination points in town, charters, limousines, and service to and from Indianapolis Airport.
Bloomington Transit (http://www.bloomingtontra...) is a full city-wide bus system with various routes to choose from. While serviceable, most buses only run every hour or half hour, and Saturday routes only run every hour. Only the routes serving campus Route 6 and Route 9 run on Sundays.
Being a college town, Bloomington also has many bike paths to get around town.
Taxi This may be an even greater atrocity than the bus system. One cab ride will cost you more than most people will make in an hour. They are not on time as well. Avoid this method.
Parking
Parking near the university is regulated. A daily visitor parking pass may be purchased for $6 at the Biddle Hotel lobby of the Indiana Memorial Union although this may only be purchased on the day of. This pass will allow visitors to park in many different lots & garages around the campus. Additionally, there are some metered parking spots on campus and some lots and garages on campus that are pay-parking per half-hour. There are a few lots and garages that are free on Saturday & Sunday. For more detailed information, go to Indiana University Parking Operations: Visitor Permits (http://www.iubus.indiana....)
There are some street spots just off of the campus that either have 1 hour or 2 hour limits from 8AM-5PM these tend to not be metered spots.