What are the bread and butter properties?

[Chris Sullens]

I'm very new to the game (still working on getting my first house). When looking for investment properties to buy and hold and maximize cashflow, what are the bread and butter properties? SFH? Multi-family? Commercial? What price range? HUD? Do you have to find off-market deals to have a chance at hitting the 2% rule? Do you market like a wholesaler and buy the properties yourself? Is there a sort of basic strategy that works well in the Oklahoma market? Just looking for a bit of wisdom from those of you who have been in the game.