Oh, and don't bother with the Thom book on R/T, get hold of a copy of CAP413 instead.
Methinks the Thom book is actually quite useful as CAP413 is not really an accurate representation of 'real-world' r/t (IMHO). The AFIS section is too light. The "Pass Your Message" instruction is a little over zelous and, more critically, there is no advice such as always requesting a zone transit even if you are above the zone. These things and the subtle changes that maybe applied to r/t are covered to a reasonable degree in the Thom book.
It is
essential that CAP413 is studied as it is the
primary text on the subject but I feel there is alot of room for a supplementary text on the subject.
Maybe there is a better alternative to Thom 7 that I don't know about?
Cheers!