README: Improve and add basic sections (contribute/community)

Author: AbcSxyZ

README.md

@@ -1,6 +1,8 @@
 ## Educational Hackathon
 
 A place to share and build resources related to education inside hackathons to encourage learning during these events.
+Born during the [Hack the Hackathon](https://hackthackathon.github.io/) (vol. 3), this project seeks to understand the
+use of hackathons as a means of transmitting knowledge.
 
 > **Definition educational hackathon:** Hackathon with an intentional educational
 > dimension to amplify learning and the transmission of knowledge.
@@ -10,7 +12,20 @@ A place to share and build resources related to education inside hackathons to e
 - [Hackathon Learning Areas](resources/hackathon-learning-area.md)
 - [Bibliography](resources/bibliography.md)
 
+### Community
+
+To share activities related to educational hackathons, to meet people interested in the topic or to find some
+support around these subjects, you can use the [discussion space](https://github.com/hackthackathon/educational-hackathon/discussions).
+
+### Contribute
+
+The project is at an early stage, we welcome contributions that could help in the understanding and building of generic
+material related to education in hackathons.
+
+Improvements can be suggested directly via GitHub, but this will require some mastery of git. Come and discuss your ideas
+through [issues](https://github.com/hackthackathon/educational-hackathon/issues) or your modifications with
+[pull requests](https://github.com/hackthackathon/educational-hackathon/pulls) to see how we can integrate your work.
 
 ### Licence
 
-All the content provided is under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/deed.en)
+These open educational resources are provided under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/deed.en).