Incorporating a resource library into your website is an incredibly powerful way to boost your rankings in the search engine and provide value to your human visitors.
A resource library is simply a collection of content that relates to the industry, business, or field the website focuses on.
The content may be in the form of guides, how to articles, historical information, or brief tutorials.
  As a general rule, resource library content is expository, and not sales oriented.
The content does not make a pitch for the website, the owner, products, or services.
While resource libraries should not be used to make a sales pitch, they are extremely beneficial from a search engine optimization standpoint.
Search engines love quality content, especially content that is value driven rather than sales oriented.
Resource libraries often contain hundreds, or even thousands of pages of content about the niche subject.
When a site offers a public service to its visitors by providing unique and helpful content, the search engines reward that gesture with improved rankings.
Several large retailers have optimized their resource libraries using link-building and keyword strategies so that their resource articles rank highly in the search engines for competitive terms.
Users are then driven to the site where they are provided with useful information, which often leads them to browse the website's sales area as well.
Website visitors that are learning from the articles are quite likely to click on a link and learn more about the products.
  Because they've already formed a relationship with the business, they are then more likely to buy.
It's a win-win!