Searching for a job is exciting! Like Kim said, I would also starting with Indeed and Glassdoor. You can search with keywords for the type of job you are looking for. Be sure to set your location in Indianapolis.
Another great place for those just entering the workforce in Indianapolis is Ascend Indianapolis. They often work with students to find internships and jobs in the Indianapolis area.
My last suggestion would be to look at professional organizations in the area. Start with a google search of "(job industry) Indianapolis association. Those groups might have a page for job opportunities or frequent events in the area.
Happy job hunting and good luck!