So the next steps after having accepted a graduate program offer of admittance is to carefully consider all of the resources-networking available to you. Several examples include: banking, cost-of-living, parking permit, change of address information (i.e., mailing and all other correspondence), access to social and peer networks, and staying organized (i.e., good record keeping). Although I came to Indiana from another state, I made many of the appropriate transitions mentioned prior to coming to Indiana. I recall emailing, making phone calls, and doing a number of online searches to gather all of the information I needed so that as soon as I did arrive to Bloomington, IN I had taken care of most of my to-do-list in terms of making the transition from one state to another.
My best advice is to make a list of all the things that can be done prior to your arrival as well as once you arrive. In my own case, I came to Indiana in the July prior to the start of my first semester, this was primarily because my assistantship start date–but it allowed me enough time to be settled in before the start of my program. So, talk to current students, your given faculty, and ask plenty of questions as you outline your next steps.
The Indiana University student newspaper is a good resource to find information on community opportunities, housing, the surrounding city of Bloomington, restaurants-entertainment and you name it. Check it out.