If there are any books, podcasts, or resources you think are essential, please share them!

Your best teacher will be experience and that can't come from books and formulas. 

Do they suggest how to enter the transaction accurately or enter an adjusting Journal Entry.

BRRRR was easy to win at when all the books were written and when it became popular.

You'll be tagging transactions throughout the year with categories that fit the Schedule E so when tax time comes (if you stay on top of it) every deposit and expenditure will already be categorized and it's quick to create the Schedule E and/or run P&L reports any time you need to.

Approx 5 commercial  properties with total combined value book value 12m .. actual maybe 20-25m?

There are far too many regulations, the transaction is a much longer process, and we are talking about someone's biggest purchase.

The other book you mentioned caters more to that audience and gets people hooked on the idea that they can invest in real estate with no money and then teaches them how in subsequent books. 

I believe subject to transactions, done CORRECTLY, between KNOWLEDGABLE participants, with FULL DISCLOSURE, are typically successful transactions that have benefits for both sides.  

It's much easier to set things up right than to have to transition them later when you have multiple properties and many, many transactions.