Keep in mind he wants owner financing because he can not qualify for bank financing...very high risk.

I'd in addition to reading, you'd want to surround yourself with like-minded investors by finding the local REI clubs via meetup site.

Keep in mind every park is different, what your financing source is is important, what kind of capital your bringing to the deal, timeline of investment, and what overall exit plan of the park is for you as an investor based on your goals. 

Would you mind sharing either some of your offers or how low you went from asking price just as an example?

IE they work C/D class..I suspect many need to do this to establish their loss's for the pending litigation.. keep in mind these properties are going to revert to the mean  IE wholesale prices so there is going to be a ton of equity lost.. but one call I can probably get them all sold  no problem.

I had wanted to purchase a brand new car, but this book completely changed my mind.

Here are some things to keep in mind.1.

I'll keep that in mind. 

I know that part of being successful in anything is networking and building relationships with like-minded people.

Keep in mind, I have little bookkeeping or accounting experience other than what I've learned through my real estate business.