Club66 is quiet a good revision tool, however the levels of questions are not always to that of the license you are taking, for example, if for example Module 4, Chapter 1.3 calls for Level 2 learning for the B1 candidates, you may well find some Level 3 quetsions in the bank that the B2 guys will sit!, so, be aware of that.
Don't do what a lot of guys do, and just learn the questions/answers, as Bae146...mentioned, the exam centres know about this and do change wordings etc to catch you out, if you don't know the subject matter.
It is however a great tool to use pre-examination to get you thinking along the lines of the exams, what can they ask etc....
There are alternatives to Club66, Airmech.co.uk for example is a great forum, and has a question bank on it, availible to members
