Hi!
i'm new to rental investing too, but here is what i did. First, come up with game plan.
1. Do you want to invest locally or out of state. I think Knoxville is hot market now so maybe good to invest locally. I invest in Indiana.
2. Decide what route you want to take (e.g. flip vs rental). i think rentals are easier to grasp at first. SFH or MFH or something else?
3. speak to multiple real estate broker and property managers (if you are intending to use them). Find the ones that are hard working and you would like to continue working with.
4. based on your strategy, learn about what you need to look out for when you look for properties. For instance, for rental, you want to look for ones that don't have lots of yard, because when its vacant you would have to pay a lot for mowing. you don't want builtin pools for the same reason. Multiple garage is a plus, etc.
5. based on what you find out from no4, find properties that fit the criteria. Run them through your PM/RE Broker. see what they think (how much can it rent for, does it require significant amount of work, is the area a good growing area, etc.)
6. Crunch numbers, if it makes sense make an offer!
Hope that helps!