Learn the basics with their extensive tutorial, and then practice a language by translating web pages. Done with small snippets, so there's not a great time commitment. The basic app provides a similar experience to Mango Language's app.

"This project of The Internet TESL Journal (iteslj.org) has thousands of contributions by many teachers."

Follow along with children's books read aloud. Many languages are available, including English, C'upik, and Iñupiaq. Set the language you like by clicking on the image of a globe, and the books available in that language will appear. Searching for a specific language instead doesn't appear to be available.