For e commerce website you can submit each producy in google base or second thing you have to configure your shopping cart so that your server is able to send analytics data to google analytics. more details will find here code.google.com/apis/analytics/docs/tracking/gaTrackingEcommerce.html
Ecommerce site is the same as a regular site. You need to do the basic on page seo before starting of building links. A technique I suggest, is adding some actual content article on your ecommerce site, like a blog, news, or straight forward informative content. THis will help SE determine the subject of your site and give it authority.