diff --git a/README.md b/README.md
index 27f5b34..670c89f 100644
--- a/README.md
+++ b/README.md
@@ -7,23 +7,33 @@ Sakamoto NixOS is built with various profiles intended for reproducibility.
 
 ## Installation
 1. Install [Nix](https://nixos.org/download/).
-2. Clone this git repository.
+2. Ensure nix is installed properly by running `nix-shell -p nano`.
+3. Clone the git repository.
 ```sh
 git clone https://git.sakamoto.dev/kenji/nixos.git ~/.config/nixos && cd ~/.config/nixos/
 ```
-3. Inside the `~/.config/nixos/` directory, 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` to your suitable needs, especially your **username!**. Failure to do so may lock you out of your system. **If you accidentally created the `biscuit` user, you will need to enter that username and its password on next login. The password is `<PLACEHOLDER>`.**
-4. 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 --extra-experimental-features "nix-command flakes" -- switch --flake ~/.config/nixos#desktop
-```
 
+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` by executing `nano ~/.config/nixos/info.local.nix` to your suitable needs, especially your **username**.  
+    Failure to do so may lock you out of your system.  
+    **If you accidentally created the `biscuit` user, you will need to enter that username and its password on next login. The password is `<PLACEHOLDER>`.**
+
+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 --extra-experimental-features "nix-command flakes" -- switch --flake ~/.config/nixos#desktop
+      ```