A lot of this is regurgitated from what others have said previously, but I hope you find it helpful.

Remember that your Contractor is the expert on the rehab, but may just be regurgitating something he heard once about a government program.

I might be wrong but I’m definitely just regurgitating BP nuggets

I talked with a few investors who spoke highly of it as well.Not sure if this applies to your situation, but I usually get better results with my wife when I pass along information for her to watch or read, rather then me trying to regurgitate it. 

Find a newbie that's trying hard and has some snap, someone who has a passion for RE and isn't simply regurgitating the same old crap everyone else is talking (faking until making)....then come along side them. 

The most common mistakes have already been stated but I will regurgitate them since they are the most common and in order:#1 mistake - overestimating the exit value#2 - underestimating the rehab costs#3 - taking too long to complete the job (time is your #1 enemy)#4 - not having the proper team in place before purchasing.

The other reality is the book material would be largely regurgitation of codified text.

Nothing new in real estate other than default swaps from a few years back otherwise just same ole same ole stuff being repackaged and regurgitated to the new investor.

Dmitriy already answered your questions so no need to regurgitate, I will add that you still need to find a bank that will handle an account for a solo 401k.

There is a lot of "regurgitation" going on in the free area by people who like to appear they know what they are talking about but aren't doing anything about it.