As of 2015, there are a number of online study aids to help people learn American English, including 5 Minute English and Voice of America. Both sites offer a number of lessons and video or audio recordings to help users with American English.
Lessons available through 5 Minute English include grammar, reading, vocabulary, listening and pronunciation. There are also lessons for slang terms or idioms that are common in American English.
Voice of America offers audio of news stories, as well as three different levels of lessons. Users can also watch videos of featured news stories as a method of learning the ins and outs of American English.