Enter your username and the password. Password is case sensitive, you need to be aware of Caps lock status on your keyboard when entering the password.
If you are not using a shared computer it would be helpful to activate the "Remember me?" option.
If you can not remember the last password you set, use the "Forgot your password?" tool to reset your password.
Enter your registered email address in the textbox and click Email Reset Link button.
Click on your username at the top of the page.
Enter your current password, the new password and the new password confirmation.