Currently Google holds about 60% of the market share for search engine traffic. Below are some advise on what you should do to increase your chances of getting top rankings for particular keywords.
Keyword Research
wordze.com
trends.google.com
keyworddiscovery.com
wordtracker.com
Code to use
<title> & <h1> - under 70 characters, contain main keywords
meta description - 200 characters, highly descriptive and use of good [...]