Deactivation of online backup

I inadvertently activated online backup but I would prefer to use Norton 360 to backup to my USB external drive.  I have now turned off the backup option.  Please advise how I can deactivate the online backup and activate the backup to an external drive.  I would, however, like to know more information on how the backup is done.  Is there a base backup including system files which serve as a full system recovery option with periodic incremental backups of data file updates??  Please advise.

I inadvertently activated online backup but I would prefer to use Norton 360 to backup to my USB external drive.  I have now turned off the backup option.  Please advise how I can deactivate the online backup and activate the backup to an external drive.  I would, however, like to know more information on how the backup is done.  Is there a base backup including system files which serve as a full system recovery option with periodic incremental backups of data file updates??  Please advise.