Advice for starting out in RE investing

I am wanting to start investing in real estate and I live around the Joplin, MO area. I am in the process of getting pre-approved and then i need to find a house and buy it(I am currently looking for houses while waiting for Pre-App). I am wanting to do the BRRRR method because i want to build up a passive flow of income and i love the concept of the BRRRR. Any advice for a newbie starting out on this adventure?