The role PageRank plays is sometimes big, sometimes small.
Google PageRank plays a role when competition is tight in your space.

The 12 Habits of Highly Effective Websites
Link to the book on Amazon.com

Books on Search Engine Optimization (SEO)
Hard copy resources to help you with your Search Engine Optimizations (SEO) needs.

Web Presence, Sales Results
SiteLeads.net helps businesses generate sales leads through top placement in search results on the web.