I would pile his tools and materials at the curb and tell him he's fired.

I am trying to become well versed in the numbers as the guiding principal in my investments.I understand this is probably a common theme on this website so if you have any generic forums, threads, or reading material that you find valuable I would appreciate any help.

You are generally looking for solid, functional, inexpensive materials.

It's a 4 metal building storage facility with a total of 24 storage units that rent for $600/month each.

I've been looking for a rehab property in B class neighborhoods and so far nothing has materialized. 

Actively re-starting about 2 1/ years ago in RE investing we began to consume a lot of material on investing (podcasts, books, etc.), the end result being we took our eyes off the ball to the deals that were right in front of us!

Update material costs based on what you saw at Lowes and Home Depot...but check this against homewyse as wellStart making nice with a contractor and ask to see their existing job sites.Use J Scotts method of going to Home Depot or Lowes early in the morning and see who is checking out at the contractors desk if you need a place to startWhen starting don't try to estimate by only looking at an MLS listingIf you're new the odds of you finding a deal on the MLS are rare.

The idea was that direct material and labor would be covered and any gross profit would contribute something to cover the overhead.

Any ideas on what learning material, either here on BP or elsewhere, for these calculations would be greatly appreciated. 

Unless you have new, material information to substantiate lowering your offer than you did at the time you offered $350k, I believe you are compromising your integrity if you lower your offer.