If you are serious about Skyrim modding—whether you want to fix a bug in a quest, create a custom follower, or just understand why "The Forsworn Conspiracy" breaks so often—track down these source files.
Bethesda’s EULA allows modders to modify and distribute new scripts. However, distributing their original .psc source files (e.g., putting the whole Source folder on a torrent site) is a gray area of copyright. That said, for 12 years, Bethesda has never sued a single modder for sharing script sources. They officially provide the source with the Steam version of the Creation Kit. skyrim creation kit scripts.zip