Sorry, I fear I may be cheating. But then, however really really nice your coffee may be, it still won't agree with me.

If (like totherme) you're medically unable to drink coffee, then of course you are to be pitied rather than censured. Philipp has no such excuse, however :-)

I've never read the "not-so-short guide", but I've heard good things about it. It can't fail to be better than Lamport's patronising and uninformative manual.

Ueno: I'll try and remember that for when I eventually have to learn some alg. geom. - it's on the "I really ought to know about that" list, but there are other things that are higher. Thanks!