How do igot job in canada post?

You need to apply on the Canada post website and click on the careers to see what is available in your area.
They hire a lot of temporary workers at this time of year in the sorting facilities and some get hired on permanent. It's place to start.
Most of their positions will be open by competition so you need to apply. They will also keep resumes on file tor future employment opportunities.
You need to keep checking regularly on their sites as the jobs are posted as they become available.
Good Luck