I am trying to backup files from my laptop to the My Passport for MAC external drive. This is my first attempt at backing up files and I am not tech savvy. I have connected the drive to the computer and the icons for My Passport and the WD Drive Utilities appear on my desktop. Per instructions I have dragged both icons into my App Folder. I have read the Getting Started portion of the User Guide and I cannot figure out how to backup my files. I have Mac Lion 10.7.3 on my MacBook Pro. Can someone offer a simple step-by-step description of how to do this? Do I have to register the device before I can backup files? 
Thanks.
Thanks.