You can find a fairly useful guide that gives a little detail on modifying Skyrim at the following link.

The Overclock.net Guide to Modifying Skyrim.

A complete list of my mods can be found there also. I am the thread author (Lifeshield) there so check out Lifeshields mod list if you are curious about what mods I use specifically for my screenshots.

If you spot any inaccuracies, or have anything to contribute to the guide please feel free to sound off in the comments section below. Please keep it constructive as abuse will not be tolerated.

Thanks and enjoy.