Identify the various categories of website users and describe in detail.

• Expert users (meaning with extended experience in the application) expects advance features and capabilities. They will want more customization options. Since they have a stable mental model of the application structure they feel free to explore the application and try new things. They will not be too worried about making mistakes since they feel secure that they will know how to bypass them.
• Novice users: on the other hand, are new to the system and will need a simple and basic interface. Since they are new in the system they will expect more secure ways of doing things in the system (for example they will choose the templates or wizards to do their first steps in the system). Novice users' interface should provide simple ways to achieve important frequently performed tasks. When designing to novice users we should remember what the main use cases and don't shadow them with unnecessary features. 
• Users with special needs: Users with special needs who are not sufficiently visually impaired to require assisted technologies can still be frustrated by poor contrast, problematic color schemes, or tiny, unreadable text. Up to 10% of men are color blind to some extent, and the increasing number of older users is less likely to have 20/20 vision than those designing the pages.