Which in my younger days was the common way to start up in RE if you had no cash and no rich uncle.

. - In expensive areas, it is fairly common to house hack on the first property. 

Any common demographics you've experienced?

Actually its quite common in the portfolio lending arena.

One common thing I hear in threads (including this one) is a lack of distinction between the roles needed to execute projects like this. 

We had a receptionist in common and shared a copy machine, kitchen, bathrooms, and conference room.

The most common portfolio style loan in Texas is a 20 year adjustable rate loan.

4-5% seems to be common.

@Colton Looper probably the most common way to deal with that issue is either 1) put in the purchase agreement that one of the units must be delivered vacant, then it becomes the seller's issue to get one of the current renters out (a lot of sellers will push back on this though), or 2) do something along the line of cash-for-keys where you basically buy them out of their current lease.

I have been researching ways agents generate leads and I see that it looks like zillow and Facebook/google ads are pretty common ways.