So you're thinking about starting The Drowned Earth? Me too, what a coincidence. Let's take a look at what you'll need to get started.
Now me, I would always start with lovely shiny new models but let's pretend to be logical and start with the rules?
You have two options for the rulebook either a free pdf (here) which has all the rules. Or you have the very pretty hardback rulebook (here) Which has the rules along with all the fluff and character details Its a bit over £30 but that's a fair price for a shiny book. I don't have the actual book (yet) because I picked it up then put it back down while at Salute and I was kicking myself about it all the way home.