Hi Nick, I completed my Type rating on the 73 about 2 years ago and put together a 'type rating diary' as I couldnt really find any info on what to expect, its not really a technical description but an overview at least.
I've posted the link below if you fancy a read.
Good luck with the rating , enjoy it, its great fun and hugely satisfying.
flyfish
http://www.pprune.org/professional-p...-my-diary.html