You may or may not decide to make search engine marketing part of your marketing and advertising strategy. If you don't have a website for your business and don't plan to ever have one, you certainly wouldn't need search engine marketing. However, in today's business climate, nearly all business are expected to have a website. In fact, since most people go online to find information, even about their local businesses, not having a website can hurt your chances of being found. Since having a website is crucial to success, there's no reason not to take advantage of what search engines offer to help you get found.
After that, you need to make a choice about how to construct an online presence that helps you achieve that goal. Maybe you need to set up an e-commerce site. If you’re interested in publishing content to drive awareness and subscribers, look into setting up a blog. A simple website or landing page with a lead capture form can help you start developing your brand and generating traffic. A basic analytics platform (like Google Analytics, which is free) can help you start to measure how you are tracking towards your initial goal.
A navigational page is a simple page on your site that displays the structure of your website, and usually consists of a hierarchical listing of the pages on your site. Visitors may visit this page if they are having problems finding pages on your site. While search engines will also visit this page, getting good crawl coverage of the pages on your site, it's mainly aimed at human visitors.