There are many questions that you should answer before moving forward as a self-employed business owner. Here are some good entrepreneurial FAQs.
You may also wish to do some reading on your own time by visiting the Canada-Ontario Business Service Centre website. They provide a start-up info-guide designed to help you navigate through the federal and provincial government programs, services and regulations that may apply to individuals starting a business in Ontario.
Are you interested in starting a farm? OMAFRA offers a business information bundle for new farmers.
Another resource of interest is the Federal Government's Rural Canadians' Guide to Programs and Services.