How to increase Google page rank?

Always rely on quality link building.
Post articles and participate in forums where you can paste your links(do follow). Directory submission is another way to get a your page indexed and page ranked.
Do on page optimization well that includes title tag, meta tag description, keywords, alt image text and image title.

 

Keeping yourself on the top of search engine can only be achieved with continuous efforts. Stick with some most searchable keywords on the Internet related to the topic of your websites while promoting your site is vital.

Just follow free basic tools of manually search engine optimization including link building through free classified advertisement (related to your categories and topics), directories submission related to your categories and topics, forums’ discussions related to your categories and topics etc. You may also join some groups on different social networking website for the cause.

Good Luck