I am currently learning to use a combination square by reading my Dads old 1943 copy of Audels Carpenters and Builders Guide #1. This is such a cool book. I never thought I would read these things. Anyway, my question to you all is, were these guides er...ever updated to present day? I know it may seem like a silly question, but these kinds of references are invaluable to me. If these aren't up to date, what other books with "general" tool techniques/proper usage techniques are out there?