Since the regulations are coordinated internationally, the Canadian rules are very similar to those in the US.
In the US, the time commitment can vary greatly depending on your background and ability to take tests. The local club used to do a technician licensing course that went on for 2 hours a week over 10 weeks. Here is a syllabus: No Code Technician Class Syllabus
. You will want to take the next level, General, exam for access to the lower frequencies. This license requires knowledge of more radio theory.
In Canada, this second license is a bit different.
The code requirement has been removed in both countries.
Ed ( w2VON)
How to Become a Radio Amateur