There are many ways to improve your online presence on search engines. It is important to remember that search engine technology evolves on a daily basis, and that staying on top with updated knowledge and understanding of the system is very important.
After a little research, I figured out a list of important points that will improve rankings :

• Accessibility - Most important is being able to be accessed (crawled) by search engines. If you are not indexed, you can't be seen.
• Content - the content on the site has to be compeling that has to relate to your visitors, and the reason they came to your site for the first place. 
• Page Elements - You need to target your keywords into your page's elements - The URL, The Title, Internal Links.
• User Experience - The way people use the website affects how other people / systems link back to your site, thus improving your total 'link' ranking.
• Marketing - There are many tricks that can affect your online presence on the search engines. One thing that is very valuable, is advertising your site in PPC Campeigns , in order to improve exposure , and 'get the word out'!
• Advanced Coding Elements - Some elements exist in your website that help search engines index your site, and figure out how often they need to "Re-visit" your site, and grab all the new info (Crawl) - Knowing how to control and manipulate this helps in the quest successful SEO.