When it comes to getting your site on the first page of Google, your page rank is a great indicator of how well your page is performing. Your page rank is based on a combination of the quality of your content, your search engine optimization, and your links and viewership. Improving all of these aspects will lead to an increase in your rank.
Your Title Tag
Note: by "keywords", I mean the words people will use when searching for your site. For example, if your site sells bicycles, then one keyword for it would be "bicycles", since that's the word you'd expect people to use when searching for bicycles.
Links Pointing to Your Website
But what are "quality" links"? These are links from other popular pages, that is, pages that have, themselves, many (quality) links pointing to them. (Yeah, I know. My definition is circular. And it's possible that the search engine has other factors that determine the quality of a link.)
Anyway, in general, since Google ranks your pages according to the number of links pointing at your page, your site will do better if it has more links pointing to it.
Your Page Must Have the Words You Think People Will Search For
Other Google Tips
Check Your Robots.txt File
ALT tags on Images
Be Careful Whom You Hire
The META Keywords Tag is Ignored
Dynamic Pages and Google
Disabling the Caching of Your Page Will Not Affect Your Page Rank
Don't Waste Your Time With The Google Toolbar's Page Rank