Thanks to the internet, you can not only participate in this online course, but you can also visit many art web sites. I will use this page to create a "Virtual Museum" by providing some links - this is by no means comprehensive, but will give you a starting point for exploration.
The Saatchi Gallery (founded by the owner of an advertising company) has been known for purchasing and displaying some of most cutting edge (and often provocative work).
http://www.saatchi-gallery.co.uk/index.htm
