In the olden days, a business depended on family and friends to refer them and their work to others. Then, they began to make flyers and small handmade cards and would put them at any local store that would allow them to. With modern technology, the way that most consumers shop (and search for a business) has changed drastically in just a few short years. Most people are now doing nearly everything they need right on the Internet.
If a carpenter wants to reach many more people in this day and age, it is highly recommended to begin carpentry marketing on the Internet. They can have their own website and hire a company to help them reach the top of the search engines by use of SEO. There are also carpenter associations one can join and these associations offer additional training and advertising services to the carpentry industry.