Jessica Thornsby is a technical writer based in sunny Sheffield, England. She writes about Android, app development, rooting and flashing mobile devices, Eclipse, Java and all things Apple. When not wordsmithing about technology, she writes about her local food and music scene, and keeping exotic pets. On the rare occasions that she's dragged away from her keyboard, she enjoys beer gardens, going to concerts, cooking tongue-blistering curries, and obsessively researching her family tree. Josh Clark is a writer, designer, and developer who helps creative people get clear of technical hassle to share their ideas with the world. When he's not writing about clever design and humane software in books, he's building it. Josh is the creator of Big Medium, friendly software that actually makes it fun to manage a Web site and he's the author of iWork '09: The Missing Manual. He lives in Paris, France, with his wife Ellen.