The first step is to get pre-approved by a lender. I suggest going through a mortgage broker. They are usually paid (by the lender) based on the amount you are approved for. So they work hard to find you a low interest rate. Don't worry if you aren't approved, they can usually suggest ways to improve your buying power. Sometimes that is working on your credit, or reducing your debt ratio.
I suggest visiting Realtor.ca if you want to start browsing homes on your own. If you want to set up a search that provides you with email notifications of new listings or price changes, send me an email with your search criteria. You can always hit unsubscribe if you're getting too many or if you've changed your mind.
If you're looking for how much a home has sold for, honestdoor.com provides the last sold price, square footage, year built, and their 'honest door price' of the home.
There are a lot of ways you can list your home yourself. As long as you are willing
to be available and put in the work, there are many options available.
Your easiest way is to have a Realtor come to your home and provide you with a Market Evaluation. That will be an estimate of how much you could list your home for. If you aren't happy with the Realtor you first meet, try another. Home buying and selling is a big deal and a Realtor can help walk you through it, step by step.