Benny Lewis, who speaks ten languages and counting—all self-taught—runs the largest language-learning blog in the world, Fluent In 3 Months. Lewis is a full-time "language hacker," someone who devotes all of his time to finding better, faster, and more efficient ways to learn languages. Fluent in 3 Months: How Anyone at Any Age Can Learn to Speak Any Language from Anywhere in the World is a new blueprint for fast language learning. His approach is different from other language programs as he encourages readers to avoid studying, ignore grammar, and start speaking from day one. Lewis argues that you don't need a great memory or "the language gene" to learn a language quickly, and debunks a number of long-held beliefs, such as children are better language learners.

In 2003, Benny Lewis spoke only one language (English) and even that one had given him trouble, as he had to overcome a stutter as a child. Benny barely passed German in high school and was so poor in Irish (Gaeilge) that he had to drop down to the lower level examination just to get into University. He moved to Spain after graduating with an engineering degree and six months into his stay there he still couldn't speak or understand Spanish beyond the most basic level. Today Benny is the known as The Irish Polyglot and speaks an amazing 10 languages fluently. He also runs the largest language learning blog in the world, www.fluentin3months.com, which receives more than 400,000 unique visitors every month. He lives in Portland and travels most of the year.