Of course, but you said you were a newbie.
Do you want to recreate what others have already done ?
You can make a backup of any directory with
tar -czf directory-name.tar.gz directory-name/
extract that backup with
tar -xzf directory-name.tar.gz directory-name/
but that is not a clean backup unless you delete everything in directory-name before you extract the backup.
open a terminal and type man tar