Paco is correct, that is a good book!
You also need (should have anyways) the CAR's in plain english, by the same author.
You can also check out Transport Canada's website and download the other pubs you'll need.
You will need the Study and Reference guide for Commercial and private pilots, the Flight Test guide for CPL Helicopter, and you can read the CAR's on the Internet. I'd advise you to buy a Canadian AIP, however, you will receive it for free after you get your license (takes about 6 months though...)
If you need numbers for the books they are:
TP 3077E, Flight test standards PPL and CPL Helicopter
TP 2476E, Study and reference guide PPL and CPL Helicopter
Hope that helps!
