What is it for? ATPL, IR, CPL, or PPL? I don't know much about the ATPL books, but for the others I would go straight to the books by Bob Tait. They are very simple to understand and are really easy to follow. A few of us are using them at the moment and are having no trouble. I would also recommend the books by Trevor Thom. What school are you at by the way? Good luck with it all