Instagram star and new author Mollie Guidera tells us about her first book, The Gaeilge Guide.

The documentary "Rebel with a Clause," opening Thursday at Digital Gym Cinema, follows Ellen Jovin on a 50-state road trip exploring language, grammar and community.

Find new ideas and classic advice on strategy, innovation and leadership, for global leaders from the world's best business and management experts.

In French the verbs 'avoir' and 'être' are among the first you learn, but remembering when to use 'to be' vs 'to have' can be ...