Personas

In user-centered design and marketing, personas are fictional characters created to represent the different user types that might use a site, brand, or product in a similar way.

Personas: The Foundation of a Great User Experience
UX Magazine
Creating Personas
UX Booth
How To Create UX Personas
UX Mastery
A Closer Look At Personas: What They Are And How They Work (Part 1)
Smashing Magazine
A Closer Look At Personas: What They Are And How They Work (Part 2)
Smashing Magazine
Introduction to User Personas
UX Lady
Defining And Applying Personas to UX Design
Evato Tutsplus
Getting the most out of personas
UX for the masses