Windows 8 Partition Display

I am coming off Linux op system and am a bit lost. My latest endeavor is understanding the Windows 8 partitions. I have a Dell Inspiron 5721, 8 GB memory, 1 TB hard disk, with Windows 8 O.S. Looking at the partition display, I see the disk is divided into five partitions. Now, here is where I need help. The partitions are named: "500 MB, Healthy ( EFI System Partition)", "40 MB, Healthy...