Further, roofers will generally find some additional costs and will file "supplements" with the insurance. 

Look up the concept of Luxury House hacking , you'd have to see if it can work in L.A , I think with Airbnb it could be possibly to supplement the mortgage pretty significantly to where you would be paying less than you would to rent..but would have to run the numbers.https://www.biggerpockets.com/renewsblog/luxury-ho...I saw there is a mortgage called a HomeReady mortgage that allows you to use 'boarder' income to qualify for loan too..but you'd have to look into it more.

He would save the money he earned on the docks and would buy books to supplement his learning.  

. (-30 degree temps here but I supplement with fire wood too) If your tenant bought the fuel and moved out in July now you gotta buy it back and sell it again to a new tenant who just paid a damage deposit moving cost and rent.

Don’t waste money on supplemental insurance . 

The previous landlord/owner was doing a side deal to supplement the amount section 8 is willing to pay.  

Read the supplemental tax bill line by line.  

But the tax base is now $1,000,000 so you will get a supplemental for the 2016-2017 tax year. 

My goal is to build supplemental income and at this early stage I'm more concern about getting as much information as I can before choosing a direction.I would like to focus on residential real estate, single family, maybe start with a small flip.. then see how that goes.

However, I want to find and meet a seasoned, 'freestyle' developer, to use as a mentor for supplementing my acedemia world experience.