Once a permanent resident has been in Canada for 4 years, they may apply for  Citizenship and a Canadian passport.   During 2015 the federal government announced that this will be decreased to 3 years.   The 2005 study material is not valid for the examination as it was replaced by the 2009 study material. However both has good background about Canada. Our advice is that applicants that is in the process of immigrating to Canada, must read both sets of study material as it provides excellent background about Canada.