The book "The Tax & Legal Playbook," is also a good read and helps gain more of an understanding of how to handle the fundamentals and gives an extensive analysis of The Tax Cut and Jobs Act of 2017. 

VA Loan you can buy up to 4 unit, you can also buy property with 2 homes easily as it is an ADU.Now if you know you are only going to live here short term 1-2 years and then in 2 years you are going to have your forever home and max out your eligibility, I would wait on the VA loan.. 

@Victor Yum You will be eligible with 50% DTI.  

You need to start with the fundamentals and that's finding off market land deals at 20c on the dollar, doing due diligence, and selling those properties.  

If you haven’t already work on your credit this can be one of the more time consuming steps and could affect your eligibility to obtain a loan. 2.

You'd be eligible for a rate/term refinance with no waiting period.

So not eligible for books purchased on Amazon, or in a physical store. 

It all comes down to long term supply and demand fundamentals ... expensive areas aren't just arbitrarily expensive, they got that way and tend to stay that way for a reason ... and that reason is that they are nice and have higher demand and more limited supply of housing.

I am looking to buy a Multi, and I am trying to understand fundamental concepts and definitions.

Even if you believe rates will be higher later (which I don't believe they will by a meaningful amount since the fundamentals of borrowing has changed), there is a reason 30 year product barely exists for commercial.