I used the command
sudo chmod 0750 /home/Gianni
to make my home folder private.
Now, I would like that another user in my pc can read files in a subdirectory of my home. I was running several commands with chmod and chown and I tried with Nautilus too, but without success.
I just would like to place a link on the second user's desktop, that he can click on and access my subdirectory.