diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 00000000..bb7ee29d
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,47 @@
+# Welcome to the contributing guide for the plugin peertube-plugin-livechat
+
+Interested in contributing? Awesome!
+
+## Translate
+
+You can help us to translate this PeerTube plugin by creating or modifying translation files in the `languages` folder.
+
+Please work on the `develop` branch, and do your commits and pull request on this branch.
+
+If the language you are interesting in does not exist yet, create a file `language_code.json` in the `languages` folder.
+The language code must be the same as the Peertube's langage code (see [peertube documentation](https://github.com/Chocobozzz/PeerTube/blob/develop/support/doc/translation.md)).
+Then add the language file in the [package.json](package.json) file, under the key `translations`.
+
+Translation strings are set in the language file as follow:
+
+- files are in [json format](https://www.json.org)
+- the key is the english string (see existing keys in the [french translation file](languages/fr.json)).
+- the value is the translating string
+- NB: there is no english translation file (this is how translation works for peertube's plugins)
+
+## Give your feedback
+
+You don't need to know how to code to start contributing to this plugin! Other
+contributions are very valuable too, among which: you can test the software and
+report bugs, you can give feedback on potential bugs, features that you are
+interested in, user interface, design, decentralized architecture...
+
+## Develop
+
+Always talk about features you want to develop by creating/finding and commenting the issue tackling your problem
+before you start working on it, and inform the community that you begin coding by claiming the issue.
+
+Please use the `develop` branch. The `main` branch is reserved to released versions of the plugin, so that the documentation is always synchronized with the released version of the plugin.
+Once you are ready to show your code to ask for feedback, submit a *draft* Pull Request.
+Once you are ready for a code review before merge, submit a Pull Request. In any case, please
+link your PR to the issues it solves by using the GitHub syntax: "fixes #issue_number".
+
+The front-end code is in the `client` folder, the back-end code in `server`. There are some shared code in `shared` folder.
+
+For general instructions (developping plugins, building, installation, ...), please refer to the [Peertube documentation](https://docs.joinpeertube.org/contribute-plugins?id=write-a-plugintheme).
+
+You can build the plugin with extra debug features simply by using:
+
+```bash
+NODE_ENV=dev npm run build
+```
diff --git a/README.md b/README.md
index 29baf2be..46068afb 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,8 @@ If you are a webdesigner or a ConverseJS/Prosody/XMPP expert, and want to help i
 
 If you have any question, or if you want to talk about this plugin, you can join this XMPP room with any Jabber client: [plugin-livechat-support@room.im.yiny.org](xmpp:plugin-livechat-support@room.im.yiny.org?join).
 
+If you want to support the project financially, you can contact me by mail at git.[at].john-livingston.fr.
+
 ## Settings
 
 For the chat mode, and related settings, please refer to the corresponding documentation:
@@ -33,6 +35,10 @@ For the chat mode, and related settings, please refer to the corresponding docum
 
 There are several common settings. Please see the documentation here: [common settings documentation](documentation/common.md).
 
+## Contribute
+
+Please refer to the page [CONTRIBUTING.md](CONTRIBUTING.md).
+
 ## Credits
 
 Thanks to David Revoy for his work on Peertube's mascot, [Sepia](https://www.davidrevoy.com/index.php?tag/peertube).