Funny... cuz I've been looking for this for years. I saw it once, and never could find it again (diff machine). I actually thought it was quite informative when I first started, and as such, sad that I never located it again.
It's a little detailed, but it actually shows you how to use chunks effectively to create a template. The introtext TV isn't necessary, but the tutorial is a little old and may have been made shortly after Revolution was first released (Evolution likely doesn't the introtext field in every resource - I really should install Evo and take a little look see... it's on my bucket list). But the create TV information is useful.
If you're looking for something that clearly shows how to use MODX Revolution, try the videos at
Design From Within Menno does an excellent job making it all make sense.