With the advent of the Alfine 8 and Alfine 11 along with Rolhoff and NuVinci multiple speed internal geared bikes are making a dent in the US marketplace.
Problem is: The shops that understand these hubs are few and far between.
IGH on the Yahoo site is a good starting place for understanding the basic mechanicals but the topics shift so frequently that getting an answer to a specific question can take forever..
It seems most (if not all??)of the IGH shops appear to be out on the west coast and there are simply times when even the best of us need a pro to talk us thru or take over the setup/repair etc.
For starters; I'd be happy to locate a viable IGH shop within 200 miles of Buffalo NY! (no, there isn't a shop with any experience in the modern IGH hubs in my area)