Below are some of the guides I have written on RootzWiki & XDA for Android/Vibrant.
If you need more help, some of these will have video tutorials. If they do not, and you want one, let me know!
This includes all the files needed to return your phone to stock.
All that you need to get up and running with Swype, and a lot of TIPS to using it more effectively.
I would see previous guide for rooting, but this has good information/procedures.
For Android / Vibrant / TouchWiz UI
Easy way to customize.
Blank icons over a wallpaper.
QuickPic in the Market is superior in every way!