If you want to be at the top of a Google search, it is probably best to refer to Google's own documents to guide you

Getting to the source for best practices

Indicate page titles by using title tags.

This is important as it will be the first thing your users see from the search results Avoid usind the same title across your site Make use of the "description" meta tag

Simple to understand URLs

Optimize your use of images

Use heading tabs appropriately

Making an effective use of robots.txt

Combat spam with re="no follow"

Notify Google of mobile sites

Switch content based on User-agent