diff --git a/Linux-201/Lab-Sheet.md b/Linux-201/Lab-Sheet.md
index 6cd76a1..c3e9189 100644
--- a/Linux-201/Lab-Sheet.md
+++ b/Linux-201/Lab-Sheet.md
@@ -15,7 +15,8 @@
 
 ## Basic Security
  - Creating a non-root account
-	 -  `sudo` permissions
+	 - `sudo` permissions
+     - The Linux security model: Knowing why you're typing your password
  - SSH
 	 - Disable root login
      - SSH Keys
@@ -32,6 +33,7 @@
 
 ## Configuration
  - `/etc/nginx/nginx.conf`
+ - `/etc/nginx/sites`
 
 ## References and Further Reading
  - [Nginx](https://www.nginx.com/)