If you're looking at a portfolio from the death of George Schneider then be very careful.  

Gerber --- 46The Millionaire Real Estate Investor - Gary Keller --- 39The ONE Thing - Gary Keller --- 34The Book on Flipping Houses - J Scott --- 33The Book on Rental Property Investing - Brandon Turner --- 30Set For Life - Scott Trench --- 30Think and Grow Rich - Napoleon Hill --- 26The Richest Man in Babylon - George S.

@George Blower thanks George!

George,Your leases can say whatever you want, but you will need to make sure you have a valid non-protected reason for one tenant having a different lease than another.

@George Pauley ,  If you buy a rental you aren't excluding someone else from being able to invest in real estate, it just means that particular house was taken off the market.

@George Pauley post about "next" definitely helps to put "risk" into perspective.

Originally posted by @George M.

Act at all times as in the presence of God (Thank you George Washington).3.

This is not an original concept - George Soros steered me on to it. 

I suggest starting with George Clason's "The Richest Man In Babylon".