I am a 79 year old general handyman with good wood-working back ground. My 35 year old front entance door and jam are need of replacement.
The current door is core,3/16" plywood laminated. 3-step-down, 6" x 10" glass viewing, 35-1/2" x 78-1/2" overall rectangle size, hung by 3-4" butt brass hinges. The door jam is standard-pine 3/4 x 1"x4" x 6'-8" on a 2"-6" thress hold. The door is sound but the jam has been drilled/cut for new locks so many times that the retaining hardware for the lock-bar fails to provide adequate security.
I am seeking some instructional steps from start to finish with emphasis on where to be cautious.