One of the big open source content management systems that everyone in my class, including myself which have been using for 2 years is WordPress. WordPress is mainly about bloging on the web known as a weblog to all of us at uni, and most of the rest of the world. This would make a realy simple stuctured website as you can also have pages in wordpress not just individual posts. I haven’t really thought about using wordpress until I thought about my own wordpress system and that you can have a whole host of different templates, maybe I could make one into what I need.

http://wordpress.org/