Lots of them need the Mod Configuration Menu as well. You might want to start with Skyrim Script Extender (SKSE), a prerequisite for many advanced game mods.
For more complex fare, you’ll want to upgrade to the third-party Nexus Mod Manager, which we’ve shown you how to use here. In addition, some of the more advanced mods can’t be found on the Steam Workshop, which is the de facto repository (and the easiest to use for beginners). RELATED: How to Install Skyrim and Fallout 4 Mods with Nexus Mod Manager Some might be available for the Special Edition too (and a few are also on the Xbox One and PS4 versions), but the original PC game is still the way to go if you want to customize your experience. The original game has the best selection of mods. This guide is for the original PC version of Skyrim, not the Special Edition.