GtE - yes of course you are right about reading current PPL training books as the main source of reference (I made the assumption that a PPL student would already be reading them, but on reflection I see that that may not be so). But I can't agree with steering clear of Langeweische because its the only book I know of that actually explains in sufficient detail most of the answers to questions that learning pilots ask that are phrased something like "Yes, but WHY does it do... ?" As L says somewhere in the the intro, its written for pilots to understand, with only enough aeronautical theory and no more.
Pace - its not about incorrect information: its perfectly possible to be confused by multiple explanations all of which are correct in their own way.
H