To manage your account:
Go to "Settings" by clicking on your user name at the top right.
Go to the "Your Account" tab.
You can update your password in the "Password" section.
Enter your current password (required)
Enter your new password
Confirm your new password by re-entering it
Click "Change Password"
Update your timezone using the "Timezone" drop-down.
Select your desired timezone.
Click "Save Changes"
The dashboard will reflect your new timezone settings.