diff --git a/README.md b/README.md
index 2936a333..efbe56b7 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # nix-darwin
 
-Nix modules for darwin.
+Nix modules for darwin, `/etc/nixos/configuration.nix` for macOS.
+This will creates and manages a system profile in `/run/current-system`, just like nixos.
 
 ```
 $ darwin-rebuild switch
@@ -37,6 +38,12 @@ result/sw/bin/darwin-rebuild build
 result/sw/bin/darwin-rebuild switch
 ```
 
+If you already configured your `NIX_PATH` you can just (re)bootstrap nix-darwin
+
+```bash
+$(nix-build '<darwin>' -A system --no-out-link)/sw/bin/darwin-rebuild switch
+```
+
 ## Example configuration
 
 Checkout [modules/examples](https://github.com/LnL7/nix-darwin/tree/master/modules/examples) for some example configurations.