Personally, I bought a 3 bed single family home soon after starting my job and had two friends from college rent which covered my mortgage plus a little extra.

In your experience what are some ways I can understand the intent of the person who said they're interested in buying? 

Signing the lease demonstrates they agree to the terms and then you can hold them accountable.If you don't do this, then the person named on the lease and paying the rent could disappear and you would have no legal authority to charge the remaining three for unpaid rent.

I’m personally based in Houston, TX, and I’ve noticed over the years that a good realtor can do a lot more for an investor than just listing a property.

Each room has its own unique theme and personality, making the home truly one of a kind.

If you're more of a 'personal referral' person than a 'do research online' person, and this is local to you in Manhattan, KS, hit up one or two of the trades people in the "little apple all stars" BNI group.

If one is transferring property title from personal name, a Grant/Warranty Deed would be drafted/recorded to transfer title. 

I personally feel that it is a liability people could use as an excuse for an accident they have if they are drunk.

Quote from @Irina Badal: I heard for anonymity purpose it’s advisable to set up a personal residence trust.

If you are just a plain person they usually must serve you in person.