Google page rank is most importance for a web site there are many way to get rank in google.
1-Use Google Sitemaps to see how Google sees your site, when it was last updated, whether you have any problems on your site, etc.
2-Get involved in communities relevant to the content of your site. Visit their forums and mailing lists, and help other people by answering their questions, posting links to your site if they contain information relevant to your replies.
3-The head section of the document should include meta entries for keywords and description.
4-Publish articles on other sites relevant to your expertise.
5-Use H1 and H2tag in your site.
Since it's not enough to have a high ranking for your front page (Google gives different page ranks to different pages).