How to create Partitions in Ubuntu
Take Disk Utility in Ubuntu(System>Administration>Disk Utility).
Click on the Hard Disk from top left of the Disk Utility.
Click on a Free space.
Then click Create Partition
Click on the Hard Disk from top left of the Disk Utility.
Click on a Free space.
Then click Create Partition
A new window will appear.
Change the memory (in Gigabites) if you want.
Change the type to FAT(works with windows) and if you want it only for ubuntu, the select ext4. ext2, 3 are older versions. for security, Select NTFS.
I'll will posting about filesystems later.
Change the name if you want.
Click create button.