Making revision notesWatch
What one word or phrase or sentance can be written to jog your memory of that whole topic/paragraph/chapter. Use that sentence/word/phrase and the rest, leave out as you'll remember it when you read that word/sentence/phrase.
Have your own little abbreviations in place of long words.
Diagram and pictures instead of paragraphs of writing. Could even make your own little picture novel type of thing or comic style.
IMO with revision notes, less is more. Otherwise you might as well study straight out of your cgp book.