The first thing is to have your parents permission. Once you have that, check with the Canadian government as to what age you can obtain a student pilot license and then a private pilot license. If this falls within your age bracket, go to an air
field with a Fixed Base Operator (FBO). 99% give flying lessons. As you learn about aircraft and aerodynamics, you will have to attend a Ground School. This is to teach you how to read air charts, navigation, etc. After 10-15hrs of flying with a Flight Instructor, you should be able to fly solo. After you finish Ground School, you must take a written test on the material. At some point, you will be required to make a cross country solo flight, minimut distance of 150mi one way.
When you have completed approximately 40 hrs of flight training and having passed the Ground School test, you must then take a flight examination by a Flight Examiner. After you demonstrate your flying capabilities and you pass the test, you will be issued a Private Pilot License. Then it is a matter of building up flying hours, taking an Instrument Flying course and test, and Multi-Engine Flying course. In high school, make the best of your math and science courses. Good luck!
Air Force pilot.