If you apply now by yourself and get married before the decision is made on your application then you will need to notify the visa office about the marriage and will have to add spouse in your application and send the fees and all other documents, its not going to make any difference but it will take a bit more time. If you get the PR and married later once you are in Canada then you can apply for the spouse straightaway but it wil take similar time for his application processing.
Including your spouse after getting PR is way out long journey.. be prepared to live on PR alone for 1 yr to be eligible for sponsoring your spouse... don't take this easy and lightly. Your PR is under fast track and not the sponsored one..
If your application is still in process and you got married then its easy .... send marriage certificate, all the forms filled again, procesing fees for your sposue, education/work related docs(if required), birth certificate, photos, PCC, additional funds proof
you are better off adding your spouse during your application as it is the best and safest option. There is no law that says you need to wait until after a year when you receive your PR before you are eligible to sponsor people. Please refer to the website as alot of people give wrong advice!!
