When possible, use text for navigation rather than images. Make the point of travel clear and easy to retrace the visitors steps. Make each page easily accessible from any point of entry on the website. Also, submit an XML Sitemap to guide the indexing of your site.

Navigation is important for optimizing the page for search engine indexing and visitor experience, which should indicate to you that the navigation you choose for your website should be one of your top concerns.

Optimizing your navigation for search engines
As search bots roam your site they use textual links to go from page to page finding relevant information and indexing your site. Below are a few steps in insuring your website's navigation is optimized for search engines:
1. Create a logical sitemap where a bot can navigate the entire website by any point of entry
2. Create textual menus
3. Include links within content

Optimizing your navigation for visitors
Keeping each page's content short and concise is considered best practice to keep a visitor's attention. Add links to key phrases that will bring the visitor further into the content and the buying process.