I was a volunteer firefighter. It is not a job, it is a very poorly paid part time job..by poorly paid, I mean circa $1500 per year!
The usual commitment is 1 weeknight a week for training, plus additional opportunities as they arrive. If you join a volley hall in Ontario, you will be enrolled in the Ontario Firefighter Curriculum, which is basically your NFPA 1001 except you complete it over the course of 2-3 years, depending on the commitment you make. If you have switched on officers, you will not be allowed to do anything on a fireground that you haven't been trained on, ie they will not send you up to vent a roof if you have not been 'signed off' on chainsaws, ventilation, ladders, PPE and SCBA etc. Once you're qualified to the level determined by the chief, you'll be given a pager and will respond, when you can, to alarms sent out by dispatch over the pager.
But as others have alluded to, you should really grow up a bit first by the sounds of your posts before you start envisaging yourself a JTF2 Signal Operator-CJIRU CBRN Ninja-QOR Rifleman-Volunteer Firefighter.
Ignore Firehall.com, just find your local volunteer fire department and call the chief, ask him how to join.