Yes. It really does. You need some sort of a stopping place online where people can find out basic information about you such as your services, contact information and business hours.
Second. Take a look at what your competition is doing. Make sure your website has all of the relevant information and resources that your competitors offer, AND as much information as a potential customer needs to make a decision about using your business.
Third. Consider writing a blog. If your website is written in a way that is objective and informational, your blog can give potential customers a glimpse into your business personality - your advice, insight and opinions. If you have enough passion to open a business, surely you have a few insightful things to say about it. Be specific. The more specific your advice to your customers, the better. Let customers see you as an expert in your field.
Fourth. Ask for feedback. Emphasize customer satisfaction and support, and then give it. Don't dismiss customer dissatisfaction as if it doesn't exist. Address it head on. Show people how you've heard their complaints and made changes. Emphasize the positive as well. If someone gives you a glowing review, post it for the world to see. A good review online can go a long way.
Fifth. Offer helpful information. People respect and appreciate the time it takes to answer questions or to help solve problems. Take the time to build the reputation for being helpful, and it will pay off.
Finally, reward your loyal customers with loyalty programs, bonuses, or other forms of payback. Even though it's tempting to use discounts or trial offers to get a new customer, give the best deal to your best customers. That will empower them to help spread the word about you and your business. Happy customers are the cornerstone of good business.