User rights assingments

Forgive the new ness of this question. However, I have a user's home directory that i would like to give another user rw too. How
would I accomplish this. Nevermin I used an acl to accomplish. A little reading goes a long way!!!!

You can add user to group that you are member or create a new group and add you and user to this group.
Then type in command prompt - chmod g+rw /<path to directory which you need to give access>