Limpster,

Check out http://www.hwg.org/services/classes/

They have some classes available such as:

HTML
http://www.hwg.org/services/classes/htmlclass.html

XML
http://www.hwg.org/services/classes/xmltraining.html

Also, you may want to check out:

http://www.worldwidelearn.com/online-training.htm

http://www.vtc.com/c-menu-tutorials.htm

Hope this helps.