The major factors that influences whether your site will rank highly in Google for your desired keywords can be broken down into two categories, on-page factors and off-page factors.
On-page factors consist of keyword optimization of the metadata and the content. After you have determined a good keyword to target, you want to include it in the title of your page, the meta description, in the first sentence of the article, and scattered throughout the article. Google “spiders” will recognize the frequency of the keywords and determine that the page must be about said keywords.
Off-page factors are the links from other relevant and reputable sites. Getting links is difficult but are an extremely valuable factor in your Google rankings because Google considers links as votes for your sites. A page that has lots of incoming links must be good, according to search engine logic, and therefore ranks higher than a equally good web page with fewer quality links.