+First, make sure that you have followed
+[the steps](/support/doc/dependencies.md)
+to install the dependencies.
+
+Then clone the sources and install node modules:
+
+```
+$ git clone https://github.com/Chocobozzz/PeerTube
+$ cd PeerTube
+$ yarn install --pure-lockfile
+```
+
+Then, create a postgres database and user with the values set in the
+`config/default.yaml` file. For instance, if you do not change the values
+there, the following commands would create a new database called `peertube_dev`
+and a postgres user called `peertube` with password `peertube`:
+
+```
+# sudo -u postgres createuser -P peertube
+Enter password for new role: peertube
+# sudo -u postgres createdb -O peertube peertube_dev
+```
+
+In dev mode, administrator username is **root** and password is **test**.
+
+### Server side
+
+You can find a documentation of the server code/architecture [here](/support/doc/development/server/code.md).
+
+To develop on the server-side:
+
+```
+$ npm run dev:server
+```
+
+Then, the server will listen on `localhost:9000`. When server source files
+change, these are automatically recompiled and the server will automatically
+restart.
+
+### Client side
+
+You can find a documentation of the server code/architecture
+[here](/support/doc/development/client/code.md).
+
+
+To develop on the client side:
+
+```
+$ npm run dev:client
+```
+
+The API will listen on `localhost:9000` and the frontend on `localhost:3000`.
+Client files are automatically compiled on change, and the web browser will
+reload them automatically thanks to hot module replacement.
+
+### Client and server side
+
+The API will listen on `localhost:9000` and the frontend on `localhost:3000`.
+File changes are automatically recompiled, injected in the web browser (no need to refresh manually)
+and the web server is automatically restarted.
+
+```
+$ npm run dev
+```
+
+### Federation
+
+Create a PostgreSQL user **with the same name as your username** in order to avoid using the *postgres* user.
+Then, we can create the databases (if they don't already exist):
+
+```
+$ sudo -u postgres createuser you_username --createdb
+$ createdb -O peertube peertube_test{1,2,3}
+```
+
+Build the application and flush the old tests data:
+
+```
+$ npm run build
+$ npm run clean:server:test
+```
+
+This will run 3 nodes:
+
+```
+$ npm run play
+```
+
+Then you will get access to the three nodes at `http://localhost:900{1,2,3}`
+with the `root` as username and `test{1,2,3}` for the password.
+
+Instance configurations are in `config/test-{1,2,3}.yaml`.
+
+### Unit tests
+
+Create a PostgreSQL user **with the same name as your username** in order to avoid using the *postgres* user.
+
+Then, we can create the databases (if they don't already exist):
+
+```
+$ sudo -u postgres createuser you_username --createdb --superuser
+$ createdb -O peertube peertube_test{1,2,3,4,5,6}
+```
+
+Build the application and run the unit/integration tests:
+
+```
+$ npm run build
+$ npm test
+```
+
+If you just want to run 1 test:
+
+```
+$ npm run mocha -- --exit --require ts-node/register/type-check --bail server/tests/api/index.ts
+```