Hi there.
congratulations on a great decision to advance and build for an awesome future.
Since you're new, whether you had $15k like you do or $150k I would strongly recommend that you go in with very little of your money at risk, while you learn and gain experience.
Believe me, I"ve been doing this for 25 years
the best way to do this is through wholesaling. Basically assigning or selling a property that is under contract to buy.
If you think about it, you'll gain all the experience from identifying what a good deal is, marketing, negotiation, contract writing, problem solving and going to closing.
Here you only limit yourself risk wise to what you put down in earnest money or option fee- which for most of my deals is $10-$50.
Imagine how many of these deals you can lock up with your $15k.
Just kidding-. I would definitely not put all your capital in one basket like a rental right now.
Learn and earn, and you'll be in this game for the long run.
Let me know if I can do anything for you
Dennis