Ye gods! When I was 17 I took apart the bottom end of an 'A' series engine, replaced a big end and de-coked the top, all after school. I had O-level physics. I built model gliders to my own design. I lapped up Ps of F when I was gliding. Of all the ground subjects, I'd have thought 'The Aeroplane - Technical' to be a breeze. So I got stuck into Thom and...........well, hmm. It's hard. And there's a lot of it. In fact, I'm having almost as much of a problem with it as bl&&dy Air Law! Then I sat at the PC and took the OAT CD database of questions on the subject - all 276 of them - and got 74%!
(then I took the Airquiz exam and got 88%, but I'm still not happy.)
And to cap all that, the bl
din' jetstream is off course - got its vectors all wrong, or something - and all these storms and wind and rain look set to be with us for the rest of the summer. Oh woe!