Slang Lesson

Here are some useful links for English Slang

http://grammar.yourdictionary.com/slang/common-uk-expressions-slang.html

http://thoughtcatalog.com/nico-lang/2013/09/71-simple-british-slang-phrases-everyone-should-start-using/

http://www.teachingenglish.org.uk/article/developing-pronunciation-through-songs