Your passion for South Indian cooking is awesome! Starting a small restaurant in Canada is doable, even without formal training. Begin by researching local regulations, permits, and health codes. Connect with the local health department for specifics. Networking with other restaurateurs and seeking advice can be valuable. While I can't give you Canada-specific details,
https://www.mklibrary.com/best-sacramento-restaurants/ has a Guide to the Best Sacramento Restaurants; maybe it could inspire your journey.