OBK,
Remember just before your course arrived and Fr Laurie (The Priest!) was suggesting "See how you go"?
Well that's why old chap!!
Liquid Hockey has good advice for you, and look around at some other sources also. Even the Trevor Thom books....his one on Meteorology (Law included) is one I, and other ATPL students still use.....
Bristols notes are good - a score of 67% on feedback tests suggests to me you are trying to gun it...what's the rush?
If you want another text to read try 'Meteorology for Pilot's' by Sqdn Ldr Mike Wickson. Its a nice readable book.
Just the thing for you to enjoy with your cocoa and teddy. All the best,
Laurie!