Most important Michigan legal?

[Jason Fish]

I was learning and reading and listening.. And I keep hearing about all the legal things that can bite you in the butt. What are some of the most important legal things you need to know when renting a house out? My dad mentioned I may want to get my business license so if anyone were to sue then it would not hurt me on my personal house and belongings. Granted I hope that would never happen, but you can never be too safe.