Lang-8 - Multi-lingual language learning and language exchange | Lang-8. Learn languages for free online. Babbel. All posts in Language Learning category. LibriVox. Learn a language | Learn a New Language for Free Through Your Library. German. Welcome to the German wikibook, a free textbook for learning the German language. As this book is still under development, you are invited to make any problems/suggestions known in our Discussion page. If you wish to contribute, feel free to see the Developer's page. Contents[edit] Resources[edit] This book has a PDF version. FSI Languages Courses. Livemocha.