1.Find what you are trying to install. If there is a hair that you want scroll down until you find a download button. My favorite creator for hair is simricale. She made the hair the is currently on m...
However, in order to use CC, Mods, and Script Mods, you must first enable them in the game's options menu. Press ESC > Options > Other. From there, select Enable Custom Content and Mods. After doing this, you should do what @Bookworm2009189 said.