I'm an investor and Realtor. Some good advice above.
If I were in your shoes, I'd interview at least three Realtors. If the Realtor asks you to meet at their office for a buyer meeting (consult meeting, anything like that), it's a good sign. Let them interview you and take your time to ask them as many questions as you want and need. Assess their ability to explain to you and tap into what you need. Be very specific with them. Explain how you want to invest (for cash flow, etc.). Few Realtors (or agents - and google the difference, I think it's important as I see a huge difference in my field between Realtors and non-Realtors. The Realtors are more educated on real estate, local laws, etc.).
Ask them how many transactions they've closed in the last 12 months. Number of transactions is a better gauge of experience than years in the business. I know agents who have been in the business 30 yrs but do one transaction a year and suck. And I know agents who have been in the business only a few years but do many transactions a year and know their subject well.
Regarding investing and agents...reality is that very few agents know how to find good rentals, what to look for, and I only know a small handful (if that) who know how to calculate cash flow, etc. So I recommend you not rely on the agent for this stuff. Be strong yourself in these matters. Use your agent to do the paperwork well and find on ewho understands and has experience with many different types of transactions (REO, short sale, estate, etc.). And find one who won't baulk at different types of financing methods. For some reason, I see even experienced agents not understand the power of private loans (they're equivalent to cash in my area), rehab loans, or other types of financing you may eventually start using.
it also is a bonus if the agent you use is able to understand what types of property will finance in which ways. For some reason, I run into many agents who struggle with this. You will likely learn it faster than them. Google the type of financing you have and learn what types of properties qualify. This way, when you're viewing properties, you understand your changes of an offer going through to closing. For example, FHA and VA financing require properties that are turn key system-wise, but neither loan type cares about cosmetics. No exposed wood, properties systems must be functional (heat source, roof, etc). The electrical panel needs to have a main switch. Whereas, conventional financing has more leeway with condition.