To buy stuff, you must go through the process of getting your age verified (look it up, it's written down along with other necessary Information). Being 32 does not matter, we all went through the process.
Then simply access the proper forums, order what you want, and go nuts. You dont need anything else. Just Dont buy outside of Canada.
The suggestion is to go see a game first, maybe get your age validated at the same time, see and ask all your questions in person, and then have fun. You'll know all you need to know about what to buy after that.