what's a best platform to look for apartment/ multi unit deals ?

[Luxon Estiverne]

Hello I am new to real estate investing, I am on my second property which I live and the first one is currently rented out.

I am interested in buying more and grow my real estate portfolio, however at what point can you qualify for bigger deals such as a 10 unit + apartment complex. Also whats a good site to find deals?

I know the banks at that level they don't finance you, they finance and qualify the investment, How do you get qualified, do you need alot down ? 

Please explain in great details if you some of you have made that cross over, can it be done at any time or do you need the play the "rich dad poor dad" monopoly 4 green houses then trade up for the red hotel?