So, all the investors into the pool are getting paid something all the time. Less

The last thing you want is to be in court with your tenant on a workday using vacation time. LESS

Some of the other books out there are timeless as far as principles, foundations, cash flow models, etc.

My company would lend on four properties for one person at one time, less than that for a new client.  

It's like that timeless adage; you only get out of it, what you put into it.

I'd really like to know how not to pay through the nose to insure these properties for the short time (less than 6 months) I'll be owning them.

The principles are timeless, easily comprehended, and applicable.  

These people know when offers are a waste of time or not.If you still feel the need to submit lowball offers, you will find yourself dealing with some of the less experienced and less educated agents who are able to spend their time less wisely.  

If a $500 DD fee is a make-or-break amount, you likely shouldn't be playing in this market...The DD fee will generally vary based on the DD time (shorter time, less fee), risk to both sides, and price of the property.

I have learned a great deal from them and many of them are classic and timeless.