How to scale up to multifamily?

[Logan Jorns]

Hello Bigger Pockets community!

     After reviewing many articles, books, podcasts and the like, investing in multifamily real estate seems to have sparked my interest. However, I am still unclear as to how exactly it works, or how I personally should get started. My plan was to flip properties until I save up > 50K and then invest in as many units that I safely can. For anyone who has purchased multifamily, how did you get started? What was you plan of attack? What do you wish you would have done different? Once you purchase the first multifamily, how do you then purchase another (flip single family until I save enough for another down payment, or?)? 

All replies are appreciated!