home.md

@@ -23,6 +23,19 @@
   [\[unsubscribe\]](mailto:sympa@lists.eurecom.fr?subject=unsubscribe openair1b-all)
   [\[archives\]](http://lists.eurecom.fr/sympa/arc/openair1b-all)
 
+## How to subscribe or unsubscribe to a mailing list
+
+Clicking on the link `[subscribe]` (or `[unsubscribe]`) above should
+open your email client. You then simply need to send the email.
+
+If clicking the above link does not work, manually send an email to `sympa@lists.eurecom.fr`
+with the subject `subscribe [list name] [your first name] [your last name]`
+(`unsubscribe` instead of `subscribe` to unsubscribe).
+
+`[list name]` is one of `openair5g-user`, `openair5g-devel`, `openaircn-user`,
+`openaircn-devel` depending on which mailing list you want to subscribe to
+(or unsubscribe).
+
 ## Meeting minutes
 * [Kickoff 20160712](kickoff_20160712)
 * [DevMeeting 20160720](Dev_20160720)