An instructional book from the ...for Dummies series of books that tells people how to use the internet. And the book knows that Internet Explorer and Outlook Express are very bad to use.
Internet for Dummies go through change over the years. It's main competition is The Complete Idiot's Guide to the Internet.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi