QUOTE(Louise13 @ Sep 2 2011, 11:40 PM)
I felt exactly the same as you when I was deciding whether to do Grade 6, - and even posted a similar post asking for help.
In the end, I found that doing lots of past papers really helped, and ended up getting 45/50 for questions 4 and 5. I have just done Grade 7, but found the transition from Grade 5 to Grade 6 the hardest.
I just did grade 6 in March and got 48/50 for the last two questions. I'm curious about how you found the jump between 6 and 7 as I'm preparing to sit 7 in Oct.
Oh, and in answer to the OP, JonathanM, ABRSM publishes a wonderful workbook for each grade of theory...
They take you step-by-step through the questions, teaching you how to think through the problems and analyze possible answers... Very Helpful
I think its called "Theory Workbook" with the grade specified below.