A realtor would definitely help you in every step of buying a house. Start getting prequalified with a lender. I am in Kokomo Indiana and can tell you that there are a few great lenders to work with. Platinum Mortgage, Bailey & Woods, & First Republic .
Yes you absolutely should be working with a Realtor as a Buyer's Agent. It doesn't cost you anything. Also, you'll need to get prequalified with a lender, if you haven't done so already. Your agent can refer you to someone.