As a retired agent, I agree with Diane. Please understand some misconceptions about real estate agents.
1. Agents practice safety 24/7 so they meet buyers at their office to ask questions and collect information about a potential client. This is safer than meeting a buyer at a home for a private showing.
2. If you are not ready to "hire a realtor", I would attend open houses every weekend, meet the agents on duty and collect their business cards. When you are ready to hire a realtor, you will know which one you felt comfortable with and one that you want to work with to buy your home.
3. In the meantime, speak to your mortgage lender and get pre-approved. All realtors will ask to see a pre-approval PRIOR to showing you any properties. This is also a safety feature so agents know a buyer is serious and intends to move.