Congrats on your first property!
There are a couple things I'd like to mention. It starts off with how involved you want to be. If you have a full time job and don't have much free time then maybe hiring out a PMC is the best call, but if you have enough time on your hands it wouldn't hurt trying to manage it by yourself because that's the best way to learn. Since its only a single property, it shouldn't be too hard to keep track of everything - people tend to hire PMCs when they have a growing portfolio that they can no longer keep track of themselves. If it makes you feel any better I manage my own properties and I'm 22, so I'm sure you can handle one at 20! The best way to learn is through experience but totally understandable if you want to hire management for your first go around. It definitely can be overwhelming at times but it is a simple game. Screening tenants properly is one of the most beneficial things you can do to set yourself up well for the long run.
Feel free to reach out if you want to connect or would like any more advice, I'd love to help!