For those teachers who wanted to be good at Business English I would recommend three websites related to Business English, listen to podcasts, read English newspapers every day, watch videos and use dictionaries.
1/Learn English Today (abbreviations, vocabulary, games, interviews, business conversations, etcetera) http://tinyurl.com/68j8vf
2/Business English Site ( general Business English, sales and marketing, listening comprehension texts, reading texts, etcetera) http://tinyurl.com/go9tfy5
3/Teaching English Org.(meetings, socialising, lesson plans and worksheets included) http://tinyurl.com/hsxm4m6
Moreover I would insist on reading English newspapers such as The Huffington Post, The Daily Mail or The Daily Telegraph on a regular basis. Anyway, there are plenty of online magazines and newspapers with brilliant articles (Buzzfeed, The Independent, The New Yorkers, The Guardian)
Watching videos on @YouTube, the news on @euronews and listening to podcasts on @BBC_podcasts is essential to keep English alive