This is the content and instructions that I used to give my presentation on CSS to some computer teachers at the end of November 2015. Please begin by looking at the presentation "CSS_essentials.odp" (Libre Office presentation). I've just exported it as a PDF incase you don't have LibreOffice handy. Everytime you see a red hand (stop) symbol, stop and do the activity explained on the slide. Thanks to the participants for their patience as I was somewhat disorganized when I went through this material. Their questions helped me organise this too. Michael Harwood TVDSB January 2016.