diff --git a/config.yml.sample b/config.yml.sample
index a8dbee86..ce6c1e9d 100644
--- a/config.yml.sample
+++ b/config.yml.sample
@@ -1,14 +1,23 @@
 service:
-  JWTSecret: "blablaGEHEMIN§)!§"
+  # This token is used to verify issued JWT tokens.
+  # Default is a random token which will be generated at each startup of vikunja.
+  # (This means all already issued tokens will be invalid once you restart vikunja)
+  JWTSecret: "cei6gaezoosah2bao3ieZohkae5aicah"
   # The interface on which to run the webserver
-  interface: ":8080"
+  interface: ":3456"
 
 database:
+  # Database type to use. Supported types are mysql and sqlite.
   type: "sqlite"
-  user: "root"
-  password: "supersecret"
-  host: "127.0.0.1"
+  # Database user which is used to connect to the database.
+  user: "vikunja"
+  # Databse password
+  password: ""
+  # Databse host
+  host: "localhost"
+  # Databse to use
   database: "vikunja"
-  showqueries: "true"
   # When using sqlite, this is the path where to store the data
   Path: "./vikunja.db"
+  # Whether to show mysql queries or not. Useful for debugging.
+  showqueries: "false"
\ No newline at end of file
diff --git a/docs/config.md b/docs/config.md
new file mode 100644
index 00000000..046878a5
--- /dev/null
+++ b/docs/config.md
@@ -0,0 +1,48 @@
+# Configuration options
+
+You can either use a `config.yml` file in the root directory of vikunja or set all config option with 
+environment variables. If you have both, the value set in the config file is used.
+
+Variables are nested in the `config.yml`, these nested variables become `VIKUNJA_FIRST_CHILD` when configuring via
+environment variables. So setting
+
+```bash
+export VIKUNJA_FIRST_CHILD=true
+```
+
+is the same as defining it in a `config.yml` like so:
+
+```yaml
+first:
+    child: true
+```
+
+# Default configuration with explanations
+
+This is the same as the `config.yaml` file you'll find in the root of vikunja.
+
+```yaml
+service:
+  # This token is used to verify issued JWT tokens.
+  # Default is a random token which will be generated at each startup of vikunja.
+  # (This means all already issued tokens will be invalid once you restart vikunja)
+  JWTSecret: "cei6gaezoosah2bao3ieZohkae5aicah"
+  # The interface on which to run the webserver
+  interface: ":3456"
+
+database:
+  # Database type to use. Supported types are mysql and sqlite.
+  type: "sqlite"
+  # Database user which is used to connect to the database.
+  user: "vikunja"
+  # Databse password
+  password: ""
+  # Databse host
+  host: "localhost"
+  # Databse to use
+  database: "vikunja"
+  # When using sqlite, this is the path where to store the data
+  Path: "./vikunja.db"
+  # Whether to show mysql queries or not. Useful for debugging.
+  showqueries: "false"
+```