The way to get PR if you are only taking a one year course:
1. Apply for an off-campus work permit as soon as you are allowed to (after 6 months of studies). The off-campus will allow you to get a part time job, up to 20 hrs. a week during the semester or full time on holidays.
2. Apply for your post-grad permit when you graduate. You can continue working on your off-campus permit after you graduate while you wait for your post-grad permit.
3. Make sure you look for a skilled position. Do not waste your time working low skilled positions.
4. Look into the PNP in your province. There may be an immigration class for graduates or workers with employer support, look into if you qualify for that. Apply if you can.
5. If your work permit is 3-4 months away from expiring, you need to think about extending it if you want to stay. If you have managed to apply under PNP and you have been nominated, you can ask the PNP to waive the need for an LMO (Labour market opinion). Otherwise, you will need to convince your employer to apply for one so you can apply for a regular work permit before your work permit expires. If you apply for a work permit before the existing permit expires, you are under implied status and can continue working. The spouse of a skilled foreign worker may apply for an open work permit based on the partners permit.
6. If all else fails but either you or your spouse have managed to work full time for at least 12 months after graduating, you can apply for PR under Canadian Experience class.