At this point, I am looking to learn all I can, but I have interest in BRRRR investing as a way to generate passive and supplemental income.

Sometimes when a property management company charges lower than 10 percent they have additional fees to supplement their income. 

Looking primarily at buy and hold rentals and would like to do some flipping as well to supplement my income for more buying power for the buy and holds.  

Greetings - Last weekend I attended a three day webinar class with a Texas based REI group, to supplement all of the reading and podcasts.

You can supplement and have additional access to cash by doing a cash out refi or getting a HELOC.

Also would flipping be a good way to supplement income specifically for the purpose of showing more income in the hopes of better qualifying for lending?

If so then you refinance these and use the cash to supplement your 1031 purchases. 

The trade off with dumping most of our savings (and then sum) would obviously be the opportunity cost, but it makes us happy to see that we’re not paying an extra $4k/yr. in supplemental interest fees.What are your thoughts fellow investors?

Use rental income from quadplex purchase,existing duplex rented out both units, to supplement income of the househack later this year around winter timeframe.I intend to do the remaining 11 years I have left in the navy east coast if possible.

There is a follow-up or supplemental book titled The Book on Estimating Rehab Costs or some such, and it will be right up this alley, too.