I remastered a commercial CD from 1986 for my own entertainment, and documented the process. Maybe someone out there will find it useful.
It's not meant to be super-in-depth, just "here's what I did".
Blog Post: Mastering with Cakewalk
Topics covered:
Early CD releases and millennial remastering attempts
Using dual signal paths for comparison
Loudness and LUFS
EQ and Compression