HTML5 exploration and useful development resources.
A persona is a fictional person who represents a major user group for your site.
Personas help you identify major user groups of your Web site. You select the characteristics that are most representative of those groups and turn them into a persona.
Reference: Developing Personas
The 6 Principles of Persuasion
Summary of the principles of persuasion, as established by Dr. Robert Cialdini, leading expert on persuasive techniques .
Reference: 6 Principles of Persuasion
Basic usability facts.
Reference: Intro to Usability