unless you are fast-track applicant, you can expect to wait for a matter of weeks before they get back to you. i would advise you to use the time to brush up on your aviation trivia, and your textbooks if you are a licensed pilot already. just remember that waiting is not necessary a sign of rejection, nor is it a bad thing at all.
the book will be sent to your correspondence address you listed in your application. in some cases, e.g. myself, candidates are asked to go to CXC to collect their copy.
good luck!