The confuser is good for
checking your knowledge, not for learning.
The met exam (6 months ago) was ~40% different to the questions in the Confuser. Also, especially in Met, the Confuser explains why it is the desired answer, but does not explain why the others answers are not valid.
The other subjects were pretty well covered by the Confuser.
There are one or two errors in the Confuser, but overall it works well to self-test your knowledge.
I was particularly worried about one of the answers in the Cconfuser, which I thought was wrong (relating to flaps), and that question came up on the exam paper - however, the phrasing was slightly different to taht used in the Confuser, and I was able to give the right reply from
knowledge!
Use the books to learn, Confuser to test, and cross check against the (few) visible errors.
Good Luck
