From the introduction:
In this guide, we are going to go over Curse of Strahd and discuss the things you need to know when running the adventure. This guide has a lot of stuff that should make your life easier.
At the end, I have included a sample campaign so newer DMs can get an idea of how to put this adventure together.
Note this is a "third-party" supplemental guide ("adventure walkthrough") to the series of adventures. The commercially published adventures themselves are not included but are required to use this guide.