server - Deleted Windows Partitions on drive now what do I do?

I'm new to Ubuntu and I figured it was time to learn. I am using Ubuntu server (headless?)

I have a drives as such:

    *-disk:1
         description: ATA Disk
         product: TOSHIBA MK1646GS
         vendor: Toshiba
         physical id: 1
         bus info: scsi@1:0.0.0
         logical name: /dev/sdb
         version: LB11
         serial: 18MIT4Y8T
         size: 149GiB (160GB)
         configuration: ansiversion=5 signature=780ee5c1

I have deleted the partitions with help from this thread. Do I need to format after deleting the partitions? Also, nice the drive is /dev/sbd I assume I need to mount it?

I'm a little lost at this point and could use a point in the right direction!!

Thanks all!

==== EDIT ====

fdisk -l

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0001eb47
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758   625141759   312320001    5  Extended
/dev/sda5          501760   625141759   312320000   8e  Linux LVM
Disk /dev/mapper/ubuntu-root: 316.6 GB, 316577677312 bytes
255 heads, 63 sectors/track, 38488 cylinders, total 618315776 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/ubuntu-root doesn't contain a valid partition table
Disk /dev/mapper/ubuntu-swap_1: 3217 MB, 3217031168 bytes
255 heads, 63 sectors/track, 391 cylinders, total 6283264 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/ubuntu-swap_1 doesn't contain a valid partition table
Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x780ee5c1
   Device Boot      Start         End      Blocks   Id  System
Disk /dev/sdc: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x504bbe6a
   Device Boot      Start         End      Blocks   Id  System

Yes, You need to format the drive or partition before use. But before formatting, you need to create partitions on the disk.

Use GParted to do this easily in a graphical way. Go to /dev/sdb, format as ext4, and mount it to partition of your choosing, e.g. /media/allthisfreespace.

See the Ubuntu manual pages for fdisk, mkfs, and parted

I assume I need to mount it?

You can only mount the drive after creating a filesystem by formatting a partition.