OpenAirUsage.md

@@ -12,12 +12,12 @@
   </tr>
 </table>
 
-# :construction: **WORK IN PROGRESS** :exclamation:
+# :construction: **OLD/OUTDATED INFORMATION** :exclamation:
 
-We are in the midst of reworking the tutorials page:
-
-- updating the still valid ones
-- removing the obsolete ones.
+This page is outdated. Please refer to the [documentation in the main
+repository](https://gitlab.eurecom.fr/oai/openairinterface5g/-/blob/develop/doc/README.md)
+for tutorials, at least for tags starting at **`2019.w09`**. If that page does
+not answer your question, come back here for more information.
 
 ## Table of Contents ##
 
@@ -27,9 +27,7 @@ We are in the midst of reworking the tutorials page:
 
 # 1. Recently Updated Tutorials #
 
-If you are a contributor on `develop` and using the latest tags (>= **`2019.w09`**), you better look into the embedded documents in this [folder](https://gitlab.eurecom.fr/oai/openairinterface5g/tree/develop/doc).
-
-*  The simplified build system is described [here](
+*  The build system is described [here](
 https://gitlab.eurecom.fr/oai/openairinterface5g/blob/develop/doc/BUILD.md)
 *  How to run now the softmodem is described [here](https://gitlab.eurecom.fr/oai/openairinterface5g/blob/develop/doc/RUNMODEM.md)