Considering how you're here on Nexus I'm going with you're trying to find out how to install mods from here. Correct me if I'm wrong there. Since you're new to modding and there's quite a bit of things to consider depending on how much modding you want to do, I'll just help you get that ball rolling. You may want to use Mod Organizer as your mod manager instead of the Nexus Mod Manager. It's a lot friendlier when it comes to troubleshooting, among other things. If you have any specific questions ask away, but I hope that helps.