In Windows Explorer, go to your 'Steam\SteamApps\common\' folder and right-click your Skyrim folder.
If you have installed Steam into your program files folder (which is not recommended) you have three options before you begin modding Skyrim: For this tutorial we will be using the path 'C:\Games\Steam\SteamApps\common\skyrim'.
This tutorial will take you step-by-step through the process of installing mods for Skyrim, and soon you will be gaming like the rest of us! Note that these instructions are based on Windows 7.