In my city, I look at those ads, extract the addresses in zip codes I like, and send them letters - the more unique the appearance the better so they will stand out from other form letters.

When you extract every bit of equity you're already selling the house.

Their main skill isn't actually real estate investing - it's extracting money from your wallet and putting it in theirs.

Through rental increases, right size improvements for the target market, thereby drive appreciation so that I can extract the equity to invest more.

I plan to extract equity from the properties later this year. 

Here in Atlanta you could easily extract a $5-8K wholesale fee for a deal like this, depending on the condition of the house and the terms of the underlying loan.Search here on BP for "subject to" to get more training on this incredible powerful strategy!

You were looking for good negotiation books from the community, so, here's a quick list, in my opinion,  of what a good book should cover:   Good negotiation books (and training) tend to focus on sound communication and extracting data so you can make everyone's life easier-- yours, and your adversarial partner's. 

Go look at soil vapor extracting costs/ sparging/ lawsuits... 

In regards to extracting a capitalization rate from comparable sales.

Ideally, the after repair LTV will be aggressive enough (<80%) to allow refi to conventional and extract enough cash to repeat while eliminating PMI.