a web browser with a web inspector kit (I recommend downloading the latest version of Firefox, as it comes with this built in and is used in this tutorial)
~7 hours to go through an HTML and CSS tutorial for those who are not already familiar with both
To get yourself familiar with HTML and CSS, follow this link to a codecademy tutorial that is designed to give beginners the fundamental knowledge of basic HTML and how to manipulate style using Cascading Style Sheets.
After completing the course you are now ready to begin editing the SimCafe confluence!