PRONUNCIATION

 Here are a few sites that may help:
1) Received Pronunciation - this is a good set of activities, audio and links from York University in Canada
http://www.yorku.ca/earmstro/speech/dialects/rp/index.html
2) Dialect blog - this is an interesting blog with lots of clips of British accents and notes on their key differences
http://dialectblog.com/british-accents/
3) ESOL Nexus - practise the sounds of English, improve your stress and intonation, and listen to examples of accents from around the UK
http://esol.britishcouncil.org/pronunciation