Oh dear!
Thank you all for those recommendations :-)
I'm currently combing my way through those suggestions (and converting them for my ebook reader, which is a painful process, ...)
Quick question, as I have the author at hand (yes, Graeme, don't think I didn't notice you slipping one of your stories ), what is this one about:
http://awesomedude.com/graeme/HOTT/index.htm