I bought mine during a flash 40% off sale. the format makes it easy to learn with plenty of mini questions throughout the lessons, and the lessons themselves are each short, but informative.

3rd party liens are of concern - I bought one with 10k lien. 

Someone else came in and bought this directly from the owner subject to the tax lien a few days before the auction ended. 

The real question is whether or not you bought the property at a good price, because you're buying it to cash flow.

If there are any gold nuggets you would like to provide or just advice in general PLEASE reach out to me to network.

I then did another cashout on a rental I bought in 2016 and used that money to buy 1 more rental, which made 3 out of 7.

My first questions is what repairs am I allowed to make to a property I just bought and plan to rent?

You should have all investment properties bought under your LLC.  

Say in case, they get bought out or possibly go out of business?!?

So I bought www.buildium.com as nd my tenants have their own portal to pay online.