How To Install A Prehung Exterior Door - Easy! Shed Build Part 9 

I'm installing a steel prehhung exterior entry door for my shed build. This is a great pre-owned/ used door that I found on marketplace for $80 and I'm installing it in my new-construction setting. This would be the same process for a fiberglass door as well.
Same or similar products I'm using (Amazon Affiliate links):
Nashua Flashing Tape:
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DAP Dynaflex 230 Caulking:
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Low Expansion Spray Foam:
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House wrap:
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*Disclaimer: I'm not a professional, just a seasoned DIYer. You should double check my measurements and advice and adhere to your local building codes.