@lilwindsor
If you have an external floppy drive you can install 3.1, the disk named install has HD Toolbox on it which will allow you format and partition the hard disk.
You then need to format the disks in workbench and then you can run the installer script on the install disk.
You can purchase a new set of 3.1 disks from AmigaKit
here, they also sell the Workbench manual too.
External floppy drives can usually be found on Ebay etc.
You can also install OS 3.5 or 3.9 too, these come on CD although I'm not sure if they autoboot or not, but I know the CU Amiga magazine CD's will boot into Workbench if you don't have a floppy drive for an initial isntall of 3.1.