I recently upgraded my iPhone5, and want to download the iphone-user-guide-for-ios-10.

I found in iTunes on my MacBook Pro running 10.12, and it shows "Downloading", but has been doing this for hours. It is only 23MB.

There seems to be no progress report.

I also tried iBooks (which I use, but have never used the iBooks Store), and clicking on iBooks Store does absolutely nothing.

How should I be getting the User Guide?