diff --git a/README.md b/README.md
index fe15b4f..ff1c02a 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,22 @@ diaspora_ynh
 
 Diaspora integration for YunoHost
 
-Thank you for being patient as deployment time can take up to about 2 hours.
-The installation directory can take up to 700MB and app start time can be take 5 minutes.
+Notes
+--------------
 
-There are not yet active SSO/LDAP integration.
+Before installing, you have to :
+
+- get a valid SSL certificate (can use http://www.startssl.com/)
+- get a dedicated domain (must install under web root like **https://diaspora.example.com/** not **https://example.com/diaspora/** )
+
+Installation effects :
+
+- Thank you for being patient as deployment time can take up to about 2 hours.
+- The installation directory can take up to 700MB and app start time can be take 5 minutes.
+
+Make yourself (your account) an admin :
+- https://wiki.diasporafoundation.org/FAQ_for_pod_maintainers#What_are_roles_and_how_do_I_use_them.3F_.2F_Make_yourself_an_admin
+
+Not implement yet :
+
+- There are not yet active SSO/LDAP integration.