Any partition you want to permanently access you should add to fstab.
If you want your /home then it is easier as part of the install but you can follow the move /home, but if you have made settings in your current /home then you have to merge those before changing to another /home.
If you just want to mount /data and it has Music, Documents etc folders, you can link those into /home in place of your current default folders. (make sure defaults are empty before deleting & linking in new).
Partitioning basics with some info on /data, older but still good bodhi.zazen
sudo fdisk -lu