There is quite a lot to do, but it's mainly a case of learning definitions, understanding diagrams, and being able to stick together a decent argument.
I revised by copying out and practicing the graphs, and rewriting all the information into a sort of booklet. I found this the easiest way to make everything sink in.
You'll also find that learning a handful of versatile quotes will come in use: a bit of Samuelson in a conclusion tends to attract a tick or two.