Backup and Migrate module - no option to back up files? In Drupal's Backup and Migrate module (/admin/config/system/backup_migrate), the only option for "Backup from" is "Default Database". In tutorials, that drop-down seemingly should also have "Public Files Directory". 

I'm a new Drupal user - is there something simple I'm missing here?
There was a module which did this earlier, Backup Migrate Files, but it got obsolete and the code is not merged with Backup Migrate module, and is available with version 7.x-3.0
Make sure you use the latest version of the module.