As a crypto enthusiast in Canada, I'm curious about the process of buying and selling cryptocurrencies in our country. Could you please elaborate on the steps involved? Specifically, I'd like to know about the various platforms available, the registration process, funding options, and any security measures I should take into consideration. Additionally, I'm also interested in understanding the taxes and regulations surrounding crypto transactions in Canada. Could you provide me with a comprehensive overview of the buying and selling process, including any tips or recommendations you may have?