The PPL Confuser is a book of example questions and answers for the PPL theory exams, so I don't think it will be that suitable.
'Handling the Big Jets' is good, but is also 747-specific.
If it's PPL-level stuff you're after, why not try the Trevor Thom book that covers the principles of flight (can't remember off the top of my head which volume it is).
If you are looking for a more advanced book about the general principles of flight, 'Mechanics of Flight' by A.C. Kermode published by Longman is considered the definitive textbook at ATPL level (and in the RAF according to the book's reviews). It's quite mathmatical - up to about A-level standard in places - however that doesn't make it particularly hard to read.
If the maths bother you, he has also written a book called 'Flight without formulae' which I have heard is also good.
[This message has been edited by foghorn (edited 23 February 2001).]