Others specialize in buying rentals using traditional 20% down methods. 

Instead of going through banks or credit unions, this method involves borrowing money from private individuals or organizations.A major benefit of private money lending is the flexibility it provides in terms of loan conditions, interest rates, and repayment schedules.

Use the wholesale method of buying in a down market to amplify results.  

This is something i've been trying to define myself as I don't want to rely on the first come first serve method. 

What were the methods you used. 

I JV'd with another person on the 7th to sell it. 2 LTR purchases were the BRRRR method, which were my last two BRRRRs.

I can attest to these methods first hand.

I am especially interested in learning to master the BRRRR method, but also ready and willing to use traditional methods to build my portfolio.

@Zach Chandler if you are going the self-manage route, which I highly recommend because it’s simple, as @Gerald Pitts mentions, use the Short Term Shop’s ‘Enemy Method’.

For ex you're putting $10k in at your employer then you could only put in an additional $13k into your Solo 401K.