3. Books
Selling books that rank third on our list of best selling products door-to-door is a great way to start earning money for yourself especially if you are a beginner. Many people don’t want to spend their money on something they won’t use, but books are surely not one of those things. You will need to learn how to target your customers who love books and shortly after your first visit, they could become one of your regular customers. Also, books don’t have an expiration date, unlike many other products which is a great plus for your investment.