There are a few reasons why internet marketing is so important to your business. First, because your customers are more likely to be your biggest customer. They're likely to be people who you've been in the market for, and they may be interested in what you're doing and what you've been successful with.
This is a strong hint to start with what you know - what your target market knows. If you're looking to appeal to a specific group of customers, online marketing can be a great way to reach them. It also allows you to build on their interest, increasing your chances of success.
Another reason online marketing is so important is because it's a second chance for you. If you don't start with what you know, you'll be in a much better position to win over new customers. Start with what they don't know, and you have a much better chance of success.