Knol Books to Learn Languages
Number of authors have written various articles on how to learn various languages of variety or regions.
Also there are youtube videos, Google Docs and Google Books.
Knol books on learning various languages provide various knols written by different knols authors on supporting the learning of a language.
Presently Chinese, French, German, Hindi, Italian, Japanese, Korea, Russian, Spanish are available. The knols will increase in due course of time due to inclusion of more knols and also posting of some more knols by knol authors who identify the gaps from these knol books.