@Vuthy Seang
It is very possible to start! Currently with the partnership I have we are pulling the trigger on a foreclosure property in Oklahoma and will be conducting the BRRRR strategy. After reading a few books (long distance real estate investing, and Buy rehab rent refinance repeat @David Greene) and deciding what strategies we wanted to focus in on and try we found a property after establishing a team from long distance. I made the trip out to Oklahoma just to see the market and get familiar with the areas to see what some of the cities we were interested in had to offer and currently we are closing on a single family residence with tons of value add potential. It's both exciting and nerve racking! Find deals that could work with your price range and get creative with the financing! 20k can definitely get you in on a property in Oklahoma just be sure to research the areas and don't pick problem properties. Establishing a team and finding a good agent/property manager can really help give you insight as it did for us.