Revision sites

http://as-psychology.pbworks.com/w/page/9174259/FrontPage
http://www.revisionworld.co.uk/a2-level/psychology/research-methods
http://www.thestudentroom.co.uk/wiki/Psychology_Revison_Noted
http://www.holah.karoo.net/links.htm

Here are some revision links. Some may be more useful than others. I found the first one to be the most useful but it depends on which bits you are struggling on.