So here is a list of things I am learning about house building:
Window Putty is not caulk.
Cinderblock is not solid. Mounting fireplace mantels as a floating shelf to cinderblock is a challenge.
All things considered Jerry's is a better hardware store than Home Depot or Lowes. Platt Eletric is often cheaper than Home Depot.
Oscillating Multi-Tools are pretty much awesome.
Not all 3-way or 4-way switches are wired the same. (http://www.buildmyowncabin.com/electrical/how-to-wire-4-way-switch-diagram.pdf)
Old circuits might contain two power cables and a single return... as a black and a red and a white.