The bonus of purchasing supplies from Midwest Supplies is that they have a really good Youtube Channel. Here is a link: http://www.youtube.com/user/midwestsupplies?feature=watch
Here is a how to video from them about using their extract kits to brew beer. This is a great resource.
Here is a video about how to use a Wyeast Smack Pack
Check out their channel if you have any questions about the home brewing process.