AP Multiple Choice How-To
Yes the study guides on Google Books are not complete, but here and above (starting on 9 nine) is the complete section from Barron's explaining how one tackles each kind of multiple choice question. It's not as good as the explantion in Cliff Notes - but I can't find that one online. Barron's for my money is the best study guide for multiple choice questions and the chapter summaries - and terrible for their examples of free response questions.