New to BP from northwestern Wisconsin

Hello from Wisconsin,

I've heard a lot of good things about BP so I thought I better jump in.  My wife and I have been in the landlord business for about 6 years now but still learning a lot.    

Can anyone suggest some good books to read on the subject of rental investments?  I have read Robert Kiyosaki, Ken McElroy, Sharon Lechter, Dolf Deroos, Fiance Kennedy, and others from the Rich Dad collection.  

I am wondering what formulas other people use to determine if a property has good cashflow?  I find it quite difficult to get sellers to release financials on properties that I look at.  My system is this....if I can't get the numbers I do not risk buying it.  However I worry that I am missing out on good cashflow properties because I simply lack the information needed to formulate a good evaluation.   I am wondering how people in this forum deal with that problem?

Thank you,

Tom