Video tutorial to understand 3tier

i have been looking at video tutorials and they seem realy easy to understand, now i want to understand how to implement a 3 tier is there a video somweher i can download ?

i tried looking at learnvisualstudio.net i could not see the appropriate video...

I know these aren't videos, but still a good series of tutorials nonetheless: http://www.asp.net/learn/data-access/

Why not just read one tutorial, try it, then ask us to criticize it? Constructively if possible.