You’re basically paying a music teacher that isn’t as good as you. 

Stessa is a great option, but Baselane is my current personal favorite, partly because it doesn't require that you use a special bank account for rent collection like Stessa does. 

(e-commerce company that was looking into bankruptcy last year, mastermind businesses, putting on broadway type musicals, including one about Neil Diamond) Their website is fairly opaque as to how they generate their profits in order to pay note investors the very high yields they offer, 14-23%.

You turn right and people willing to sell below market value chase you.You turned left.So you complain to your favorite Guru that you are not getting much luck with your mailers calls and texts.3 guesses what EVEY PERSON on Bigger Pockets is going to tell you?"

I've looked at PM software and it seems AppFolio is the clear favorite, but it requires a minimum of 50 units to sign up.

What is everyone's favorite form of creative financing (seller finance, subto, etc..) ?

The Smokies are a favorite of mine, but beware it is an ultra competitive market. 

One of my favorite authors, Nicholas Nassim Taleb, sold me on the concept of Skin in the Game and holding all pundits accountable for prior predictions, myself included. 

What is everyone's favorite real estate investing books?

You can set as many as you like but I like to pick my favorite 5-6 for each time period.