I feel what really matters is Page Authority and Domain Authoriy, not the Page Rank which google stopped updating it

Try to follow the below points.

• Publish useful and relevant content.
• Ensure the content is updated on a regular basis.
• Ensure fine Meta data including Metadata descriptions and Metadata keywords are included.
• Make use of alt tags for better page ranking in the search engines

Post your articles, one every few days, to Ezine Articles.
Find relevant directories to submit your site to.
Reread about anchor text
Or hire some expert from SEOclerks.