diff --git a/README.md b/README.md
index 2b3f1a2..254fa35 100644
--- a/README.md
+++ b/README.md
@@ -6,19 +6,8 @@ Currently the overlay provides these packages:
 - GNUnet itself
 - libgnurl
 
-## Installation
-We can install the overlay into the user environment like this:
-
-```shell
-$ ln -s ~/.config/nixpkgs/overlays/gnunet-overlay.nix gnunet-overlay
-```
-Now we can install the packages using
-
-```shell
-$ nix-env -f '<nixpkgs>' -iA gnunet
-```
-
-To use the packages from the overlay system-wide (on NixOS) we can add this to our ``/etc/nixos/configuration.nix``:
+## Installation of the GNUnet service (NixOS)
+On NixOS we can install this overlay system-wide and then enable the GNUnet service. This will install the *multi-user setup* as described in the [official documentation](https://docs.gnunet.org/handbook/gnunet.html#Installing-GNUnet). We have to add this to our ``/etc/nixos/configuration.nix``:
 
 ```
 { config, pkgs, ... }:
@@ -29,10 +18,50 @@ To use the packages from the overlay system-wide (on NixOS) we can add this to o
     (import (fetchGit https://ulrich.earth/code/nixpkgs-gnunet))
   ];
 
-  environment.systemPackages = with pkgs; [
-    ...
-    gnunet
-  ];
+  services.gnunet = {
+    enable = true;
+  };
   ...
 }
 ```
+
+We can add options to the global GNUnet configuration file like this:
+
+```
+  services.gnunet = {
+    enable = true;
+    extraOptions = ''
+      [NAT]
+      ENABLE_UPNP = NO
+
+      [FS]
+      IMMEDIATE_START = NO
+    '';
+  };
+```
+
+After running ``nixos-rebuild switch`` the GNUnet system services should be running (we still have to [start GNUnet per user](https://docs.gnunet.org/handbook/gnunet.html#Starting-GNUnet):
+
+```
+$ touch ~/.config/gnunet.conf
+$ gnunet-arm -s
+```
+
+## Installation of the GNUnet package (Nix on other systems)
+We can install the overlay into the user environment like this:
+
+```shell
+$ ln -s ~/.config/nixpkgs/overlays/gnunet-overlay.nix gnunet-overlay
+```
+Now we can install the GNUnet package for our user. This will allow a *single-user setup* as described in the [official documentation](https://docs.gnunet.org/handbook/gnunet.html#Installing-GNUnet).
+
+```shell
+$ nix-env -f '<nixpkgs>' -iA gnunet
+```
+
+Now we can [start GNUnet](https://docs.gnunet.org/handbook/gnunet.html#Starting-GNUnet):
+
+```
+$ touch ~/.config/gnuent.conf
+$ gnuent-arm -s
+```