How to mount a basic device or drive:
mount [device] [destination path]
For example:
mount /dev/sdb1 /mnt/disk2
Edit your /etc/fstab to make it automount at boot:
/etc/fstab: [device] [destination path] auto default 0 0
For example:
/dev/sdb1 /mnt/disk2 ext3 defaults 0 0