Introducing Mango Languages! Mango Languages has lessons covering over 70 world languages and 20+ ESL courses. Lessons cover cultural and grammatical nuances, while integrating components of vocabulary and pronunciation. Mango Languages has everything you need to learn a new language: conversation and film based resources – even an app to learn on the go! To get started, visit our Mango start page or download the app at the App Store or Google Play Store.