TX should I refi my rental to buy more property?

[Allen Culpepper]

Hello all,

New to investing, only have a rental since we bought a new house and didnt sell the old one in time. I like being a landlord though (at least collecting the rent) and am looking to buy more rentals or flips in time when I feel comfortable. 

I was curious on the BRRR method and wondering if that's what i should do with my rental now.

Details: $100k mortgage @4.25%, property is worth ~$180k via comps. Rent I get is $1550. 

If I refi I wouldnt want a new mortgage that rent couldnt cover or would that be ok if I keep some of the money in an account to cover it over time? Or maybe refi at $150k so monthly will be lower? I'm really nor sure how people get money to buy other houses. :)

Enjoying learning, thanks for everyones help!

Allen