I have an app icon on desktop for "My files" app.
But how is it possible to create a shortcut for
SD card\books\ on desktop?
I have a Samsung a3 non rooted with android 5
It's just a matter of your file manager allowing you to create shortcut to a folder.
Seems that the default file manager of Samsung(My Files) doesn't provide that feature.
Just go for another file manager such as MK Explorer. In the options next to a folder name, you can find
create shortcut. That will do the job.
This shortcut will persist even if you uninstall the file manager that created it.