Moreover, you'll receive more favorable terms/rates utilizing a primarily home loan product than an investment loan. 

They insert a sock and I believe use an epoxy product to create a liner inside the old cast iron pipe significantly extending its life for much less cost.

Know the lenders requirements for the loan types you will need.For instance you may find you need to have liquid cash of 9 Months P&I and 100% of the loan amount as your personal net worth in order to avoid personal guarantees on the loan, and your retirement accounts may not count towards your liquidity.Know the requirements of the loan products for the apartments you want to buy.There are no books for that, that I know of--just lenders info.Because without that all else is just scholastic exercise.Good Luck!

-Youtube, Google, and ChatGPT: I often find myself looking up videos or asking ChatGPT about terms I am unfamiliar with, which has been a great help so far.

I will be doing a video series to track the whole thing for everyone if I get enough interest.

The maintenance request feature is awesome and does allow pictures (not sure about videos).

Not sure what that product is. 

I do this because sellers are going to offer 3% (they are in my market), and if I signed for less, I could not get the overage.To secure my buyers in this new environment, I made a 27-minute video going through the whole agreement and pointing out the things to beware of.

@Tyler Kesling   Fannie/Freddie do not have a "blanket loan" product.

Not only in building wealth by starting early, but also just everything you're learning about life and being a productive successful person.