Before you buy a restaurant you may want to see if you are suited to be a restaurant owner. If you are willing to do what it takes to run a business, and not just indulge a hobby, you may want to buy a restaurant. You will need to have experience in the restaurant business before you can successfully buy a restaurant and run it on your own.
That is not to say that you can’t hire employees who know a great deal about the business before you buy a restaurant. Of course you will want to learn as much as you can about the restaurant business so that you have more than a little knowledge of how your restaurant operates.