Self Study Suggestion: Reading - 8 Pronunciation Errors That Made The English Language What It Is Today

Not a nadder any more.

In today's Guardian you will find 2 interesting articles on English pronunciation. Often mistakes in pronunciation have turned into common usage. What's more native speakers find English pronunciation difficult as well. To read the articles got to:
(1) http://www.theguardian.com/commentisfree/2014/mar/11/pronunciation-errors-english-language

Expresso?

and (2) http://www.theguardian.com/science/2014/mar/11/speaking-pronounce-mispronunciation-english-elocution-expresso-nucular