Click on the Profile icon (top right) and click Settings to edit and update your user information:

Profile Information
-
Name
-
Email address
-
Contact information
-
Time zone
-
Email signature
Security and Permissions
-
Password
-
Security question
-
Review user type and permission
Passwords requirements
8 characters with 3 of the following:
-
Symbol
-
Upper case
-
Lower case
-
Number