diff --git a/README.md b/README.md
new file mode 100644
index 0000000..69fa1aa
--- /dev/null
+++ b/README.md
@@ -0,0 +1,58 @@
+# Sakamoto NixOS
+
+Sakamoto NixOS is built with various profiles intended for reproducibility.
+
+## Available Hosts
+
+- MacBook M series
+- Linux
+
+## Installation
+
+1. Install [Nix](https://nixos.org/download/).
+
+2. Ensure Nix is installed properly by running the following (this also gives you `nano` for editing later):
+
+    ```sh
+    nix-shell -p nano
+    ```
+
+3. Clone the git repository:
+
+    ```sh
+    git clone https://git.sakamoto.dev/kenji/nixos.git ~/.config/nixos && cd ~/.config/nixos/
+    ```
+
+4. Copy `info.default.nix` and rename it to `info.local.nix`:
+
+    ```sh
+    cp ~/.config/nixos/info.default.nix ~/.config/nixos/info.local.nix
+    ```
+
+    🚨 **CRITICAL STEP:** Edit `info.local.nix`:
+
+    ```sh
+    nano ~/.config/nixos/info.local.nix
+    ```
+
+    Modify it to fit your system — especially your **username**.  
+    If you accidentally leave the default `biscuit`, that user will be created.  
+    **Login password for `biscuit` is `Your-generic-password`.**
+
+5. Execute the following command based on your host:
+
+    - **MacBook M series:**
+
+        ```sh
+        sudo nix run nix-darwin --extra-experimental-features "nix-command flakes" -- switch --flake ~/.config/nixos#macos
+        ```
+
+    - **Linux:**
+
+        ```sh
+        sudo nixos-rebuild --flake ~/.config/nixos#desktop --impure
+        sudo nix run home-manager -- init --switch
+        home-manager switch --flake ~/.config/nixos#desktop --impure
+        nix-channel --add https://nixos.org/channels/nixos-unstable nixos nix-channel --update 
+        reboot
+        ```
diff --git a/system/users.nix b/system/users.nix
index ca10c37..5b22289 100644
--- a/system/users.nix
+++ b/system/users.nix
@@ -10,7 +10,7 @@
       ${general.Username} = {
         isNormalUser = true;
         extraGroups = ["wheel" "networkmanager" "input"];
-        initialHashedPassword = "$6$Qab6SSvEJM2YRtVA$7Oyl7E3pp/FKtCC.2Tb2tyzp3yp7BFHFAKngUYJssQJ.v1Q2mqsgW9m7njpaKNcka2vyCwrnmw1R.YPlFqR0p1";
+        initialHashedPassword = "$6$19ss/QojER5kh20A$4VnZASq0CN4LLKSUvFfGzXsvEPprRa96u7c5GkSPWdKEuZp7aQQ5EHmZ5nsmKYlWu10gXKL.xHBBG2y33IbW01";
         useDefaultShell = true;
         packages = [
         ];