There are basic some rules to do SEO for website. I can tell you some sort description about SEO, There are 3 types of techniques, White Hat Technique, Black Hat Technique, Grey Hat Technique. White Hat Technique is must be used by you to get Good and Positive results from Google. Second thing There are Two Types in SEO, OnPage SEO and OffPage SEO. Whatever you are doing on the website is called as OnPage SEO while the other activities are done like Web Directory Submission, Article Submission, Blog Posting and other activities is called OffPage SEO.
Still you have any doubts then you can ask me any time.