I want installation help!!...I have 4 distributions that i really want to experience..
Do i have to partition the 80 gb into 4, for all four distributions? Or under one big space
Each Linux distribution will require (at least) one partition. Linux also likes a swap partition.
I have been using 3-4GB partitions for testing new distros but they are getting larger. A 5-6GB partition should be fine.
Linux does not require a primary partition.
So perhaps a primary FAT partition for sharing files with Windows, a primary Linux Swap partition, and an extended partition. The extended partition could be split in four or even allowing for partition sizes of 10GB have room left over for other storage.
Use the expert mode (or similar) during your first Linux install to partition the drive as you wish. Designate which partitions to use for Linux swap and root (/). Leave the other partitions empty until your other installs.
You can assign the same swap partition for all the distributions.