Learning a new language

HUGE amounts of listening and reading authentic material in the target language is essential, to the sum of about 10,000 hours if you want to be good.
Most language learning programs such as Pimsleur and Rosetta Stone are inadequate not by the quality of the material but by its very limited quantity. No one will ever gain fluency with the meagre vocabulary that is learned from such courses despite their flashy advertising and exorbitant prices. Many people want to learn a new language the most popular way is Rosetta Stone.