I agree with Erin that 20% down is the absolute minimum for financing a single family rental house.
The lending standards require adequate income and verifiable assets as well as excellent credit. You need all 3. Millions of people have excellent credit, but are only two paychecks away from being broke.
Bob Kiyosaki offers loads of incorrect information in his speeches and books. Such as his ridiculous definition of what an asset is and what a liability is. Consider him for the entertainment and motivational value, not so much for his practical advice or his definitions. The time you wasted reading Kiyosaki would have been better utilized watching Judd Apatow movies. Go to the John Reed link below if you want to see a more critical opinion of Kiyosaki's career.
I am a Realtor who also invests. But I strongly disagree with Kiyosaki on the idea that you need to use an agent who is also an investor. It is OK if you do, but it is not necessary. You need an agent who cares about YOUR investment choices. For example, I was as good an agent for my first twenty years when my only investment was my residence as I am now.
I don't know if Erin has any real estate investments. But I do know she is one smart cookie, and considers the fiduciary interest of her clients to be very important.
And Please, please, do not be taken in by junk books by Robert Allen, Carleton Sheets, Robert Kiyosaki and the like.