Remove and Replace Exterior Door

OK, This will be the first Handyman Post. What I originally intended to do here.
The most recent project, removing and replacing our back door. The old door was both rusty and rotten. too many years without a storm door in front of it. Thankfully, the frame was not too bad.
1 - Remove interior trim.
2 - Carefully measure the old door and frame.
3 - Inspect rough opening and floor framing for Rot.
4 - Buy new pre-hung door and any framing that must be replaced.
5 - New door frame should be at least 1/2" smaller than rough opening.
6 - Pick a nice Saturday with sunny weather forecast for overnight and Sunday.
7 - Remove storm door and then remove exterior door trim.
8 - Remove any extra length hinge screws that go through door frame into studs.
9 - Use a metal-cutting blade in a reciprocating saw to cut any nails.
10 - Door should become loose in opening as you cut hardware.
11 - Get some help and remove the door and frame as a unit.
12 - Reinspect rough opening and floor framing.
13 - Check for square opening. Check for proper framing.
14 - Door openings should be framed with extra jack studs holding up a header.
15 - Make sure opening is square and properly framed.
16 - Install new door and frame following the manufacturer's instructions.
17 - Door frame must fit in rough opening with enough clearance that the door frame is not twisted out of square.
18 - Instructions should indicate how to shim and attach door frame to rough opening.
19 - Verify and correct any out of square issues with door assembly.
20 - Do use shims to prevent door frame from moving as you finish anchoring it in place.
21 - Use spray minimal-expanding foam to seal between door frame and rough opening.
22 - New exterior trim is part of pre-hung door assembly.
23 - Caulk brick mold where it meets siding or brick.
24 - I use the type of caulk that can be painted.
25 - Re-install or replace interior trim.