To have your "data" partition mount upon boot, you'll need to add an /etc/fstab entry. We can help you format this properly if you provide the output of the following commands
otherwise, if you'd like to try it yourself, take a look at the fstab link in my signature.
sudo fdisk -l
As for moving your "user profile", this in the *nix world would be /home (which stores all your application preferences, etc.), you can move this to a different partition by following the instructions here.