It sounds like you're looking for guidance on how to properly post or install a (likely a "hot" or popular pack) — probably on a forum or torrent site, or just for personal use.
First, let’s define the anatomy of the search term. rocksmith cdlc pack hot
Instructions: Extract .psarc files to /dlc/ folder. Works with latest Rocksmith 2014 Remastered. It sounds like you're looking for guidance on