diff --git a/README.md b/README.md
index 2f30add4d..70742ccf8 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,16 @@
 
 A flat-file database of courses in multiple languages.
 
+
 ## Browse
 
-The courses are [available here](https://courses.m3p2.ljbac.com).
+The courses are [available here](https://courses.m3p2.ljbac.com). (alpha version, **DO NOT SHARE THE LINK**)
+
 
 ## Contribute
 
-Anyone can contribute to the courses, in a wikipedia manner.
+Anyone can contribute to the courses, in a wikipedia manner, but with the consent of the original authors.
+
+Contributions are done via the usual git fork|merge flow.
 
 Read [CONTRIBUTING](CONTRIBUTING.md) for more information.
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