Required documents to be a landlord

[Hoa Nguyen]

Hi everyone, I'm looking to start off my real estate investor career. I'm putting together my gameplan and my goals, but I've hit a road block that for some reason isnt clear anywhere I do research. And that is the required licenses, documentation, and legalities of renting out a property. Do I need a broker's license, do I need a permit? I live in illinois and I realize that different states have different laws. So if anyone from Illinois here knows what I need to get started that would be awesome!