Steam is the only version of this game, you can install nexus mods either with the Nexus Mod Manager or installing it manually. Can you install nexus mods for steam games?
exe file and to launch your game only via SKSE exe/mod manager, not Steam.
It was in Alpha stage for a long time and finally, on October, 9, it evolved into a Beta mod manager. Mod authors will have to support pre and post AE version of the mods. Vortex mod manager is the product of a Nexus team that combines the best of MO (Mod Organizer) and NMM (Nexus Mod Manager) plus having some new elements that neither manager had. The Download link at the top of each mod’s page will download the main, current version of the mod. Your browser will hand off to the Nexus Mod Manager application, which will download the mod you chose. Download and install location for mods can be changed after installation at any time). Locate a mod you want to install and click the “Download (NMM)” button to download the mod with Nexus Mod Manager. This installer lets you pick the install location (this affects only the application itself.
Then, when you go to install a mod from the website, you can click the green 'Download with Manger' button, which will normally open the Nexus Mod Manager program.
You can download a program called Nexus Mod Manager from the Nexus website. Frequently Asked Questions Where to get nexus mod manager?