Stop Being A Dummy! is an ebook all about words and how grown, professional adults seem to be very bad at picking the right ones (or simply making them up altogether). This book is a tad sarcastic, so you may need some thick skin. I am well aware that people can learn this stuff free of charge on the internet, but money seems to motivate people. If they pay for it, they'll use it. Thus...

99¢ to buy, updates are free, and it's available on:

• iBooks Store (Works on Mac, iPhone, iPad)