Unfortunately you cant natively make Amiga OS disks using a PC. Once you have the Amiga operating, and if you have a way to get Amiga Disk images from the PC to the Amiga (one way is the fact that Amigas running OS 2.0 or later can read PC formatted disks) then you can use the PC to get the images, transfer them to the Amiga, and have the Amiga write out the disk in the Amiga format.
I will send you a PM to get in touch with me, I can get some Amiga OS disks to you to get you started.