Hey Nimrod, I know exactly what you mean, I have recently done and thank god passed the air/leg, I went Oxford for that course as the material I got before was not quite straight, I must say besides the course being very good, their books you get are laid out in a simple manner to understand as well,,, but, all said, I still got some funny questions in the exam which I had to do the ole guessing game with!
I also just posted some questions that I recieved recently with the answers, but after some checks I find the answers seem incorrect, so I am now hoping for the wealth of experience on this site to shed some truth.........
Don't give up, give Oxford a call (01865 844 235) see if they will at least sell you their book or loan one from someone.