BuildingScience.com offers a lot of good material. Like the name implies it is the science of building. Air sealing, wall construction, crawl space insulation etc.
It is a good place to go to if you aren’t sure what the best way to seal a window is. They have very objective views on common building techniques. The common 2×4 exterior wall? They show in scientific terms how it is crap.
Worth checking out if you want to green your Brooklyn brownstone but aren’t sure of the best way to insulate your joist spaces. Or the best way to make your bricks water tight.