Want to purchase a multi unit building don't know where to start

I am a young entrepreneur with a go getter mindset. I own a small credit repair company from my home office, I opened a barbershop recently (where I rent the building 🙄) and I am trying to think of another/better way to earn cash flow, become an actual owner, and start building and elevating. I have wanted to own property and multi-unit buildings since I was 25, but I never did it. 2020 I am ready to start! Can someone please help me on moving up.