Bonjour, hola, ciao, konnichiwa, kia ora.
Loads of time on your hands? Learn how to say hello and more with this list of language books. The benefits of learning a second language are enormous, including improved cognitive abilities and enhanced memory, not to mention the ability to communicate with people in their local dialect. You could start local, and learn some Wiradjuri language from Tara June Winch's The Yield. And if you're feeling especially adventurous you can even learn Dothraki! San athchomari yeraan (or, much respect).