Jeremy,
If you think the info in that little document is a lot to take in you are in for a shock.
There are three huge folders of documents that you have to learn at the college, plus all the new techniques , phraseology, flight theory, altimetry, meteorology - the list is extensive.
Freddies,
There is masses of information regarding Stage 3 assessment in this thread. Plus I think a guide is still on the NATS website. Time to use that initiative...