Here is a great reference for many beginner trailering questions. In British Columbia you need an endorsement (07) to tow a trailer weighing more than 4600 kg (10000 pounds) on your basic license.
https://www.icbc.com/driver-licensin...full-guide.pdf
There are a few other nuggets related to trailering on this site.
www.icbc.com
ICBC is the provincially owned, dominated and controlled Insurance Corporation of British Columbia. BC is a very mountainous province, so a trailering endorsement makes sense.
https://www.icbc.com/driver-licensin...full-guide.pdf
It's too big (3.72 MB) to attach