Is Clonezilla the best backup system for Ubuntu 12.04.5? And if so, what do I need to do to download it...ie: Do I need to partition files? If so, how to do this. Thanks.
Backups is kind of complicated, because everybody has different needs.
Clonezilla is an option, as you mentioned, but for a desktop system something lighter like Duplicity or Deja-Dup might be a better fit, as smaller, incrimental backups can be stored on a remote server or an external drive.
Tarsnap is a lighter, secure alternative.
If you've got multiple systems in your environement, something like Bacula might also be useful, but requires a much more complicated setup.