I used the Oxford OAT training dvd's rather than the books, except for Nav, which is very confusing, if your buying direct from Oxford OAT great, if you have seen the dvd's elsewhere ie ebay, be very very careful, once loaded onto a pc, they may not load onto another pc, some protection code i think ( I never loaded mine, just played the disc which is slower )
the dvd's are very good and worth paying the full price for
