In this DLC, you'll find an in-game walkthrough and (eventually) a PDF guide with more depth. Some wallpapers will slowly but surely make an appearance, as well.
The in-game walkthrough features two modes: a "Hint" mode and a "Full" mode that'll include both the hints and the "correct" highlighted choice. In the "Hint" mode, you'll see a question mark inside of a bubble. You'll come across some "N/A" parts where I felt the hints weren't super necessary. For "Full", you'll see the question mark/bubble and the highlighted choice. The choice is up to you, of course.
As a note for the sake of clarity, you'll come across the question mark in a bubble at other points throughout the AVN. These will appear for scenes where the context isn't immediately apparent. Typically for flashbacks or sudden jumps to other scenes.
To find future wallpapers (and the eventual PDF guide): Right-click on Move the Chains in your Steam library and select Manage > Browse local files. You'll be able to the wallpapers the "game" folder.