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.

Email

*What is meant by attachment facility?
  The attachment information with e-mail.
  These attached information can be sent as attached files.
  The files may be text files or document files.
  By the attachment facility we can send any number of files with email.
*What is the use of email dictionary?
  While sending email the email dictionary helps to know the meaning of the word, if we need.
*What is the use of spell check?
  It helps to make spelling corrections in the email which we typed.
*What is the use of treasures?
  The facility which gives different words in similar meaning.
*What is mean by inbox?
  Inbox is which we receives all the emails to a person who holds email address.
*How can we erase the unwanted email?
  Select the unwanted emails and press the delete button.

Software

*What is a software?
  Software refers to the set of computer programs, procedures and associated documents.
*What are the types of software?
  Application Software
  System Software
*What is an application software?
  Application software is a set of programs designed to carry out operations for specified purpose.
*What is system software?
  System software is a set of  programs designed to control the operation of a computer system.