diff --git a/doc/md/01-prerequisites.md b/doc/md/01-prerequisites.md
index e69de29..a202b3e 100644
--- a/doc/md/01-prerequisites.md
+++ b/doc/md/01-prerequisites.md
@@ -0,0 +1,38 @@
+# Prerequisites
+
+## Your Proxmox infrastructure
+For using this project, you need to have an pre-existing Proxmox infrastructure.  
+If you want just test, a single Proxmox server with some machines is enough.  
+In this case, your cluster is represented by your single node.  
+
+You have to the possibility to access on the Proxmox API with an Administrative pve user (not root).  
+Setting up Proxmox policies is out of scope for this tutorial.  
+Report you to the official Proxmox documentation.  
+
+## Recent environment for installing this project
+This project need an recent environment to work correctly.  
+Typically, in this documentation, we'll use an Debian 9 environment.  
+You can use an other distribution, but just check if theses software are available:
+
+* Python 3.4 +  with python-redis, pymongo, webpy, python-request, python-crypto
+* MongoDB 3.2 + / Redis
+* Web server : Nginx (or apache)
+* PHP(5 or 7) with this extensions: php-curl, php7.0-json 
+
+This project is separate in two parts: Frontend and backend.  
+Backend is writing in python and frontend in PHP/HTML/CSS/JS.
+You have the possibility to use these two parts on different machines, 
+but du performance you should use the same (low network latency).  
+In more, the API authentication system is currently not implemented and this architecture can expose you
+to security issues.
+
+## Hardware
+To run smoothly, the hardware requirement will depend to your goal and infrastructure.  
+For a basic test, you can run this project on a very small machine (1cpu/2gb ram/10G disk) without problem.  
+But on a large production system, it can need more resources, especially for the crawler and the databases.
+If your Proxmox infrastructure is very large, the data generated can be really important,
+and cause a slowly working if your hardware is too low.
+
+In some case, it can be necessary to use an independent MongoDB machine or cluster.
+
+[Readme](README.md) <-- Previous | Next --> [Setup - Backend](doc/md/02-backend.md)