The Creation Kit tutorials offer a host of various tips, tricks and guides on how to get the most out of Bethesda's modding software.
In today's tutorial;
How to create an individual, unique NPC with his/her own voice and armour set, and then add them to the game at a location of your choosing.
Creation Kit Tutorials Playlist - http://www.youtube.com/playlist?list=PLE3E7CC13B95E5AB6&feature=view_all