Every quarter I run a seminar Bristol for SMEs and start up businesses called How To Market Your Website. On this course I outline best practice for optimising your website to be found by your prospects using search engines, specifically Google.
Internal links - links on your pages
Links on your main page
<a href="http://www.your-web-page.com" title="another keyphrase about the landing page">A Descriptive Keyphrase</a>