Everything else, any motivators and techniques you pick up and employ to increase or 10X your life and productivity are a bonus. 

Here is a little bonus story about a restraining order that I think you'll all find interesting.We had a tenant in one unit of a duplex assault a tenant in the other unit.

I did like the information in "The Book on Estimating Rehab Costs" which was a bonus book that came with "The Book on Flipping Houses", written by active real estate fix-and-flipper J Scott, available here on biggerpockets.com (http://get.biggerpockets.com/flippingbook/) . 

Having said that, once you give it to the lender, if something comes up, you cannot ask for the money back so flexibility is an added bonus in your own account.

As a bonus, I just started a new policy this year, that anybody who buys the current year's book always get the next year's ebook at no additional charge, or the next year's hard copy book for $40. 

Having a real estate license is always a bonus, as it gives you commissions, and access to the listings coming on the market very fast. 

Thanks Amanda :) Hadn't really thought about writing off any of those trips but i guess its an added bonus!!

Sage is cheap, and as a bonus, makes the house smell nice too!

Appreciation is an awesome bonus but not something a deal should rely on.)What Every Real Estate Investor Needs to Know About Cash Flow...

Plus — as an added bonus — Josh Dorkin comes back to the BiggerPockets Podcast to explain where he’s been and what the future of the BiggerPockets Podcast will look like!