Well I thought I would post a link to a webstie, to help people like myself who are doing their IGCSE's and did not pay much attention in class or just don't understand it... at all.
Ow and btw dont' just think that because you don't make the criteria this link will not be of any use to you, because quite frankly these are some of the best "Much Ado About Nothing" summery/ analysis notes there are (and best of all its FREE!).
Well what are you waiting for? Click on the link!
(hope it helps) :)

http://www.srvc.net/engl154/html_files/Ado_Lecture/htm