diff --git a/pivilon-manual-setup.md b/pivilon-manual-setup.md
index 5615872..1d14dc0 100644
--- a/pivilon-manual-setup.md
+++ b/pivilon-manual-setup.md
@@ -1,46 +1,36 @@
-Pivilion manual setup
+# Pivilion manual setup
 
 You can chose to download one of our pre-installed images or follow this guide to install Pivilion on your Raspberry Pi from scratch and use it as a portable darknet gallery. It installs Tor with Lighttpd as a hidden service and runs a simple php based gallery system. Tor is free software for enabling anonymous communication and censorship circumvention. However, Pivilion doesn't use Tor for its anonimity features. Tor is used to host a HTTP server as a hidden service. We make extensive use of its NAT punching capabilites to enable us to host a gallery behind NATs and firewalls. Keep in mind that this may or may not be legal in your country.
 
-Checklist
+## Checklist
 
-Raspbian image
+#### Raspbian image
 https://www.raspberrypi.org/downloads/raspbian/
-
-Tor Browser
+#### Tor Browser
 https://www.torproject.org/download/download-easy.html.en
-
-Windows only 
-
-Putty SSH client
-
+### Windows only 
+#### Putty SSH client
 http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
-
+#### Preparing the SD card with the image
 First we need to put a fresh Rasbpian image on our RPi's SD card.
-
 You can use either the full or the lite image, it’s up to you.
-
-Rpi installing images
-
+###Rpi installing images
 https://www.raspberrypi.org/documentation/installation/installing-images/README.md
 
 Choose your system. We’ll be using Linux + dd.
 
-Once that’s done, connect your RPi to a DHCP network with an ethernet cable and power it on. 
-
-Depending on your network configuration, you can login to your RPi using it's hostname "raspberry", or use a network discovery tool to find it's IP address. 
-
+Once that’s done, connect your RPi to a DHCP network with an ethernet cable and power it on.  Depending on your network configuration, you can login to your RPi using it's hostname "raspberry", or use a network discovery tool to find it's IP address. 
 We will use nmap to scan our DHCP IP range for all hosts that are up. Replace 10.0.0.1/24 with your IP address range. You can also check you router's settings to see all devices connected to your network and their IPs.
 
 nmap 10.0.0.1/24
 
 Login to your pi using SSH with username: pi password: raspberry.
 
-Upgrade your system.
+### Upgrade your system.
 
 sudo apt-get update && sudo apt-get upgrade
 
-Expand your filesystem.
+### Expand your filesystem.
 
 sudo raspi-config (select the first option from the menu).
 
@@ -58,9 +48,15 @@ You can now navigate to your Rpi's IP (or hostname - raspberry) using a browser.
 
 You will see lighttpd's placeholder page.
 
-Install php-gd.
+Install php and modules.
 
-sudo apt-get install php5-gd
+sudo apt-get install php5-cgi php5-gd
+
+PHP (Hypertext Preprocessor) is a server-side scripting language designed primarily for (but not limited to) web development. We use it to run our basic gallery generation script. 
+
+The GD library (php5-gd) is a graphics drawing library that provides tools for manipulating image data.
+
+php5-cgi is a PHP to CGI interpreter. CGI (Common Gateway Interface ) offers a standard protocol for web servers to interface with executable programs running on a server that generate web pages dynamically. The interpreter is how Lighty handles PHP.
 
 Apt will install all required dependencies.