How to put only put down 10% to buy a house?

[Wade Alderson]

I was catching up on some old shows on the DVR and on Discovery Channel and the star of the show Undercover Billionaire, Glenn Stearns said that most people buying real estate think you have to put down 20 to 30% down but that's not true and on the show he only put down 10% and got another $10,000 to fix the place up wrapped into the loan. 

I listen to a lot of podcast about real estate and I keep hearing host and guest who say they only put down 5% or less as a down payment. 

As someone who wants to do invest in cash flowing real estate I have always thought it was true that as investors we need 30% for the down payment, but I never seam to have my act together to save up the money to get started before I have some emergency that needs my money (I manifest my own bad luck). But a 10% down payment I can come up with in short order and keep doing as long as it's really doable. 

What am I missing...?

Please educate me on my missed information so I can finnally get stated on my path to wealth.