Hi there,
I bought the Jeppesen Instrument/Commercial book and DVD and mostly have only noticed a difference in airspace, how the maps are printed and units of measurement (obviously)
that's pretty much it, and this mainly affects VFR flying. All the other regulations are actually based on the SARP's (standards and recommended practices) issued by the ICAO in form of the 18 Annexes and they apply to all ICAO member states, if there are differences the state has to inform ICAO about it, but usually there are only minor differences, if there are any at all.