diff --git a/docs/source/backup.md b/docs/source/backup.md
index 6f8451048..9a4015713 100644
--- a/docs/source/backup.md
+++ b/docs/source/backup.md
@@ -14,14 +14,19 @@ The WAL-G backup setup is integrated into the Postgres Docker image. It will do
 WAL-G is installed alongside Postgres. See the Dockerfile of Postgres (`postgres/Dockerfile`) for details. In the docker-compose postgres command (`docker-compose.yml`) archive parameter of postgres are set needed to make archives.
 
 
-## Restore setup
+### Configuration
 
-The WAL-G restore setup is realized in a dedicated Docker image (`postgres/Dockerfile-restore_backup`). It will create a new Postgres database cluster, fetch latest backup using `wal-g backup-fetch` and create a `recovery.conf` file in the new cluster during Docker build. `recovery.conf` is used by Postgres during first start to get the `restore_command`. Again the exact commands are to be found in `postgres/wal-g/restore_command.sh`. During first start Postgres will get WALs from backup server and restore the database.
+To store backups in Google Cloud Storage, WAL-G requires that this variable is set: `WALG_GS_PREFIX` to specify where to store backups (eg. `gs://x4m-test-bucket/walg-folder`).
+Please add this to the `.env` file at the root of MapSwipe Back-end (See `.example-env` for environment variables which have to be set)
 
+WAL-G determines Google Cloud credentials using application-default credentials like other GCP tools. Get a Service Account Key file (`serviceAccountKey.json`) for your Google Cloud Storage (See [Google Cloud Docs](https://cloud.google.com/iam/docs/creating-managing-service-account-keys)) and save it to `postgres/serviceAccountKey.json`.
 
-## Configuration
 
-To store backups in Google Cloud Storage, WAL-G requires that this variable be set: `WALG_GS_PREFIX` to specify where to store backups (eg. `gs://x4m-test-bucket/walg-folder`).
-Please add this to your `.env` file at the root of MapSwipe Back-end (See `.example-env` for environment variables wich needs to be set)
+## Restore setup
 
-WAL-G determines Google Cloud credentials using application-default credentials like other GCP tools. Get a Service Account Key file (`serviceAccountKey.json`) for your Google Cloud Storage (See [Google Cloud Docs](https://cloud.google.com/iam/docs/creating-managing-service-account-keys)) and save it to `postgres/serviceAccountKey.json`.
+The WAL-G restore setup is realized in a dedicated Docker image (`postgres/recovery/Dockerfile`). The entrypoint is the `ini_recovery.sh` srcipt. This script will create a new Postgres database cluster, fetch latest backup using `wal-g backup-fetch` and create a `recovery.conf` file in the new cluster. `recovery.conf` is used by Postgres during first start to get the `restore_command`. Again the exact commands are to be found in `postgres/recovery/restore_command.sh`. During first start Postgres will get WALs from backup server and restore the database.
+
+
+### Configuration
+
+> The same configuration as for the backup setup is requiered. Except the Service Account Key has to be stored at `postgres/recovery/serviceAccountKey`.
diff --git a/docs/source/contributing.md b/docs/source/contributing.md
index 00d8b498c..5814b692d 100644
--- a/docs/source/contributing.md
+++ b/docs/source/contributing.md
@@ -1,12 +1,49 @@
 # Contributing
 
-This document is a work progress. It should describe how to contribute (code or issues) to the MapSwipe back-end.
 
-To contribute to the MapSwipe back-end please create dedicated feature branches.
+## Clone from GitHub
 
 ```bash
+git clone https://github.com/mapswipe/python-mapswipe-workers.git
+cd python-mapswipe-workers
+git checkout dev
+```
+
+
+## Install MapSwipe Workers
+
+Create a Python virtual environment and activate it. Install MapSwipe Workers using pip:
+
+```bash
+python -m venv venv
+source venv/bin/activate
+pip install --editable .
+```
+
+
+## Feature Branch
+
+To contribute to the MapSwipe back-end please create dedicated feature branches from dev:
+
+```bash
+git checkout dev
 git checkout -b featureA
 git commit -am 'add new project type'
 git push -u origin featureA
-git request-pull origin/master featureA
+git request-pull origin/dev featureA
+```
+
+> Note: If a bug in production (master branch) needs fixing before a new versions of MapSwipe Workers gets released (merging dev into master branch), a hotfix branch should be created. In the hotfix branch the bug should be fixed and then merged back with master and also dev.
+
+
+## Style Guide
+
+This project uses [black](https://github.com/psf/black) and [flake8](https://gitlab.com/pycqa/flake8) to achieve a unified style.
+
+Use [pre-commit](https://pre-commit.com/) to run `black` and `flake8` prior to any git commit. `pre-commit`, `black` and `flake8` should already be installed in your virtual environment since they are listed in `requirements.txt`. To setup pre-commit simply run:
+
 ```
+pre-commit install
+```
+
+From now on `black` and `flake8` should run automatically whenever `git commit` is executed.