Submission confusion pls help

I thought I'd try uploading the manuals I have again, but the new submission system utterly confounds me. I originally have everything in zip format, which the system doesn't take. When I unzipped the folder, I apparently could only submit one of the pages. There are also no instructions to clarify my confusion. I can't retake any of the pictures since I no longer have the physical manuals. Please help. :(