Or the impact of the tariffs, when implemented, on the construction material.

As far as educational material, there are some good courses on underwriting in Udemy.

They specialized in concrete tilt up, but did a lot of time and materials work for a self made real estate tycoon who owned a lot of Federal Way.Along the way I got my CPA license and practiced in several differing sectors including doing some work with low income housing projects.As far as my start in RE, it was with buying my first personal SFR and later moving to a new residence. 

Before we go full in house, we are really trying to dial in the quoting process, specifically with putting material lists together.

I did just this in my two flat, it cost me around $150k to rezone, dig down, upgrade everything plus fee after fee after fee and materials after materials.

I work for a building materials company now and took their online game from Zero to very engaged in the past few years and it's been really fun.

Quote from @Jimmy Lieu: Quote from @Andrew Syrios: The BRRRR strategy is tough these days (I even wrote an article about it that goes into more detail a little while back: https://www.biggerpockets.com/blog/beyond-brrrr-taking-advan...)In short, high interest rates as well as labor/material costs makes it hard to buy a property with debt and cash flow. 

Take you pick.Most questions revolve around Material Participation, and tax filing compliance.

You can break it out by general RE activities and material participation.

No labor + materials.