Nish,
Yeah, I know it won't be long before I get clobbered with subject matter that requires reading, reading, and reading again before it half starts to make sense, and as I say, early days at the moment with only the first few frames done.
I've heard Climatology (amongst others) can be a bit of a sod, so I expect to be increasing my hours as time goes on. Worth it in the end though eh ?!
all the best, GB.