your right on that one. Good job i was in a full time groundschool when i did my ATPLs in Madrid. They used the Oxford books,riddled with mistakes. If i had been distance learning i would say i would have made some mistakes and misinterpreted tsome of the info given. I found radio Nav book a nightmare!!. Oxfords books are information overload with twice as much crammed into them as say, Bristols, which are much more condensed into need to know and clearly explained information.