Need introductory guide to cellular automata for geographic automata systems I would like to work on urbanisation and I've read that cellular automata has potential use on model urban sprawl. However I need some kind of introductory to cellular automata in order to tackle an academic paper I have found.

I have a fair background in Computer Science. Moreover I am looking for any tools from CS applied to cities.
This here might help you as an introduction to cellular automata, written by Joel L. Schiff: INTRODUCTION

Furthermore, there is a copy of "Modelling Urban Development with Geographical Information Systems and Cellular Automata" by Yan Liu online. I do not know whether I can link it here, but you can easily search for it.