Choose partition type, primary or logical. You can create 3 primary partitions and 1 logical. You can create many partitions in the logical.

People do not create partition for every Linux directory. The basic concept of partition is to keep data safe and tidy in their respective space. Normally, Linux partitions that need to be assigned their own partitions are:

• /boot
• /swap
• /
• /home
• /usr/local
• /var

The / partition are mandatory and the /swap partition are recommended. Other mount points depend on what the end system would be (what type of Linux server it is). So for the /swap and / partition type, you should choose Primary. If you are planning to create partitions for all directories above, choose logical for the third partition. That's the basic idea.