Each BR even has its own mailbox and key. 

Are you looking for "value add" options or turn-key?

Rehab costs and ARV (After Repair Value) are key parts of evaluating deals, so it’s great that you’re diving into these concepts early.For rehab costs, creating a rough estimate starts with understanding the scope of work and local pricing for materials and labor. 

The key is that in order to completely defer all tax you must purchase at least as much as your net sale. 

Educating yourself with BP is key and putting together a team is key. 

One key he found was mixing a welcoming atmosphere with firm guidelines.. it typically falls under standard tenant landlord laws for eviction.. so you’ll want to double-check local regulations.You mentioned Furnished Finders and Padslipt.com.. from what I’ve heard, those can be great if you’re targeting traveling professionals or short term visitors.

What’s a key mistake you’ve learned from that could help others?

But the real key is to find motivated sellers.

And what is your price point and are you looking for turn-key properties or something along the lines of a "fixer upper"? 

House hacking is a fantastic way to start, but preparation is key.