Thanks all for the great responses.
Zoomy, what are some books you might recommend in addition to the usual Bob Tait theory books?
And in addition to training wheels' comment, does anyone know of a school with a good reputation, or alternatively, a school with a bad one (PM probably best for this).
Finally, for anyone who is currently an instructor, what sort of time should a full time course (4-5 days per week) take from first starting to test day?
Cheers