I thought I'd start by explaining a bit about pedal steel guitars, and why they fry your brain.
Seriously - we often talk about chords, chord progressions and then get confused when some people talk about chord numbers, rather than letter names. If you want to play pedal steel, you really need to get your head around the names and the numbers. I've also tried to explain how the pedal steel is one instrument nobody can ever borrow, and why you probably cannot play somebody else's!
This video just deals with the mechanics of what the various pedals and levers do.