I think the important thing to realise, as BEagle points out (in one form or another), that there is a big difference between what the CAA expect us to know and what we need to know.
What we need to know: (for example) Red lights on the left of the a/c, green on the right. White ACLs are for fixed wing only, but if you see a red ACL, it can be a chopper or a fixed wing.
What we don't need to know: I refer to the post given by my honourable colleague some moments ago!
I personally believe that air law should be taught in a series of points, not in a fashion reminiscant of 'this is the law:'.
Therefore, a whole load of meaningless tosh becomes...
To do this, this is what you must have:
+ A thing
+ A jobby
+ One of these
+ Two of those.
If, however, you're only doing it at this time, then you need not have A jobby.
(I hope that serves as a fairly generic explanation)
I personally found the confuser very good at teaching things in that format... with the added bonus of being able to see what the questions are at the same time. For this reason I maintain that I was doing no wrong in learning Air Law (specifically)* from the confuser. Therefore I personally would recommend that trustno1 buys one.
BEagle, thank you for your comments on my 'advisable'/'optional' dilemma!