Click your username (top right), and choose User settings. Your Personal Information displays, with the Personal information tab selected.
Click the Change Password link under the Password field.
Enter your Current Password, your New Password, and a confirmation of your new password. Your password should be between 6-11 characters in length, should use both letters and numbers, and cannot start with a zero (0). The more complex your password is, the more secure it will be!
Click Save. If you do not click Save, your changes are discarded.