The tutorial mentions this path C:\Users\Public\Documents\My DAZ 3D Library.
I don t have this path on my pc, only C:\Users\Public\Public Documents\My DAZ 3D Library
I think it s the same thing
anyway as you can see I've copied the content of the zip file, I'm unable to find the armor, as you can see I only have clothes on the left screen
Manually installed assets aren't part of the "smart content". You'll find the armor in the "content library" tab (the one right after), I assume in some sub folders of "Daz Studio Formats/Daz Library/People/".