What is the best way to go about owning multiple houses?

[Raeshelle C.]

I one day want to own multiple single family rental properties. I read this article and this guy owns a lot of properties: http://www.biggerpockets.com/renewsblog/2014/03/30...

What is the best way to own multiple properties? How do you feel about the technique of saving 100K and taking out 5 loans and letting the tenants pay your loans? Or is that way too dangerous and advised against? Also, by doing it that way there probably wouldn't be any extra cash....any feedback on this?