I think a lot of it depends on what you want to do.  

I would get referrals from investors you trust, have a clear scope of investment for your project first.Price is dependent on your deal complexity/size.

(some being STRs) It really depends on the way your current rentals are structured on your taxes.

@Miriam Po it depends on your goals rent or flip.

Depending on how the conversation is going, I normally begin by asking them if they have considered listing the house with an agent, letting them know that it is still a sellers market, etc. 

That depends on what your state or local laws say, but I can guarantee that 24 hours after you throw it out the tenant will be back and raising a fuss because you threw out all their precious heirlooms.

It would depend on the quality of the mentor and/or mastermind.

It depends almost entirely on appreciation and is a much higher risk for investors.

I invest in Pa and here, $1500-$3000 will be your avearage here depending on size and units.

One is not necessarily better than the other.Some potential drawbacks to a home + rental unit:Shared utilitiesParkingTenant preferences (house tenants may shy away from the idea of someone living in their garage or basement)Zoning/Code Enforcement issuesInsurance costs can differ, depending on the configuration of the units