Cortana-Your personal assistant

 Cortana is your personal assistant on Windows Phones. She's there to help make things easier for you and keep you up to date on the things that matter to you.Below is a short video about windows phone 8 Cortana.

ADDING A CONTACT IN WINDOWS PHONE 8

To add a contact in windows phone 8.1, perform the following steps:
 1.On Start, tap People. Then swipe over to Contact and tap New
 2. Type in the boxes and tap Save.