Once you are logged into your account dashboard, click on Your Profile in the upper right hand corner of the screen.
Click on the Edit Your Personal Information button.
Click on the Edit Password linkon the menu to your left.
Enter your current password in the Old password field, then your choice of new password into the New password* field. Make sure to choose a password that you don't use for anything else, and that would be difficult for anyone else to guess. Then, Re-enter your new password into the Re-Enter New password field to confirm.
Click the Submit button
You can now log in to your account with the new password that you just set.