SEO - Search Engine Optimization

To implement SEO - Search Engine Optimization correctly, we must broke it down into 2 factors;

• on-page criteria: <title>,<meta-description>,<h1>,<h2>,...,<h6>,<b>,<i>, keyword proximity, keyword density and relevance, etc...
• off-page criteria: links (in pages within our website and pages of other websites) that point to our specific pages. The terms "Page Rank" is used to weight and evaluate off-page criteria. Special attention should be given to: anchor text, reference_tags, "title" attribute and "target_"

I hope it helped. Feel free to comment...

Reference
http://www.wepapers.com/Papers/96414/Seo_Tutorial.pdf