"Weird Al" Yankovic video - 'Word Crimes'. this is a parody of robin thicke's 'blurred lines". funny, of course, it's "weird al", but i admit, i'm a member of the 'grammar police' so i support this joyful rant.
The definitive book on sales in print (and in any other media). There's a hint in having two chapters on testing; learning what does and doesn't work is the difference between true professionals and most occupiers of marketing roles in industry
Short-term investment in your English can have long-term beneficial effects on your career. Not only does an improvement in your English skills help with your career, it can have a beneficial effect on your family and social life too