I find the content excellent. The material is there to cover learning objectives, not to make you a meteorologist. I prefer it being condensed, it was a fresh and welcomed change comparing to pooleys PPL books which kept going on and on repeating itself endlessly.. large volume doesn't always represent quality you know.
There have been a couple of things that I didn't understand right of the bat, the forum is there, you can ask and fill the missing bits. Also youtube is full of very good videos that explain most topics