...hmmmm...
a good question...
I had a look through the staff lessons (never had got round to actually doing that before...) and I suppose if you are at the "level" that Xaeda is, (which is so impossible to judge from just what I saw - or difficult to judge at any rate!) you would know at least half of the moves in the book. However, in saying that though, you can always learn a new way to do the same move, or variations that you had never thought of... and also there are many moves that are outlined in the book that aren't in the lessons - so there would be heaps for you to play with if your technique was limited to just those in the lessons... (I'm not saying yours personally Josh - I mean the generic "you"... ain't our language confusing!) Examples are all the movements based on transitions from forwards/backwards fig-8's in one hand (if you are an advanced double staff twirler most of these will be familiar) - turning full circles, "torso twist" - across the body, the "bezerkeroid" (you'll have to buy the book for that one!)- all combine shoulder rolls (fig-8's with 1,2,3 extra twists) also more movements along the horizontal plane etc etc...
Just going from our workshops, we've never had anyone (even people I would consider at an advanced level) who we couldn't show new things to - even if it was just different variations on things they already did which made them look a bit different...
but then, most of the safety, fuel, general info would be fairly old hat to you, as well as some moves which you know inside and out already... and to be honest the book was written with beginner/semi-experienced twirlers in mind...
Does that answer the question? I promise the book is much clearer and to-the-point than this post (!?!)...
..and PS - copies are already on their way to Malcolm - flying accross the Tasman as we speak! (thanks for idea though...)