Beginner seeking advice

[Travis Vizier]

First off, hello all & thanks in advance for any advice that can be given. I'm interested in buy & hold on Single family homes in the Jackson MS area. My plan is to find homes in the Retail price range of $80,000-$120,000.
My day job is spent as a Nurse Anesthetist which leaves me with a healthy monthly cash inflow. My question is regarding how much should I put down on my first couple of properties?

Average rent is $1,000-$1300 in my target area.

Should I:
Try to pay nothing down?
Put down 20%?
Pay cash?

Being new to this, I have a good deal of book knowledge but no practical.