diff --git a/courses/main.adoc b/courses/main.adoc
index b7b4106..1ad477f 100644
--- a/courses/main.adoc
+++ b/courses/main.adoc
@@ -75,13 +75,16 @@ This is a project that will be deleveloped thoughout the semester 2021.
 * 2021-06-12
 * 2021-06-19
 
+The link to participate will be announced and sent per email.
 
 === What will i learn?
 You will learn to code, coordinate and orchestrate a swarm of self-acting nodes.
 
 === What tools will I need
 
-Internet and a pc
+Internet and a PC
+
+You should also have *installed swarmlab* to be able to recreate the steps and if you wish contribute to projects and communicate with your schoolmates.
 
 ==== Swarmlab.io hybrid