Is it necessary for me to contact a business registration agency?

Hello, everyone! I'm going to launch a small start-up company with my aunt in Ontario, which would provide customized ayurvedic goods to improve people's health and immunity. I've looked into startup guidelines and regulations on several websites. But I haven't received any clear information about the registration procedures, and I come from a non-business background, so I'm not familiar with them. Is there anyone who can provide me with a step-by-step strategy for this? Do I need to approach an agency that can answer my questions? One of my friends suggests this business registration in Ontario service for taking the help. Is it a trustworthy source?

https://youtu.be/XGJW6Dc7XzM

LoL

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https://youtu.be/bFGmnpKuCFU

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I’m gonna try to sleep…