Well, I believe the first step involves counselling of some sort. After that, they use a scalpel to slice off your ...
Sorry, but I couldn't resist! You did, after all, ask about the "process"!
In all seriousness, are you seeking to come to Canada only to have the procedure(s) performed, or on a more permanent basis? If you only want to come for the operation itself, there are a myriad of factors that can play a role in how to make your intent a reality, such as:
1) your nationality
2) whether or not you're visa-exempt
3) whether you already have a particular medical facility and or doctor in mind
4) whether you have the funds needed to pay for the procedure as well as to pay for living expenses before the actual operation (I'm sure a substantial amount of pre-procedural psychological evaluation/counselling, hormone treatments, etc will be required) and during the post-op recovery period. I'm not sure but I imagine that there will likely also be long-term (possibly even life-long) "maintenance" required, such as injections and/or other medications.
5) etc.
My point is that there's simply no way to answer your question without a lot more background information and specifics about your current situation/status and your intents/desires for the future.
I wish you the best of luck in your endeavours!