vw_nutter,
I'm afraid that a lot of the Met is a memory test, but if you can borrow a copy of Brain Cosgrove's book: "Pilot's Weather" then he does explain some of the frontal stuff a lot better than Thom.
Also, if you're struggling with the Coriolis effect then there were a couple of YouTube videos that helped me to visualise what was going on.
If you look in the book "Propellerhead" by Anthony Woodward, towards the end he talks about his experience with Met of being able to read the sky. So enjoy doing this, whilst the exam is a bit fo a drag, you'll gather experience and be able to do this yourself soon so look forward to it & view the exam as a step on the way.