Language/Multiple-languages/Culture/Internet-resources-for-polyglots

GrimPixel's recommendation

The Internet is a giant treasure. It provides so many free services. The websites listed here are all free, but you can consider to donate or to buy additional functions.

Basic course

http://www.duolingo.com/

https://fsi-languages.yojik.eu/

https://en.wikibooks.org/wiki/Subject:Languages

Translation

https://translate.google.com/

Pronunciation

http://forvo.com/

Reading

https://www.wikipedia.org/

http://readlang.com/

https://www.beelinguapp.com/

Listening

https://mytuner-radio.com/

https://lyricstraining.com/

Vocabulary

http://www.memrise.com/

http://www.internetpolyglot.com/

Dictionary

https://www.wiktionary.org/

http://www.wordreference.com/

http://www.linguee.com/

http://bab.la/

https://glosbe.com/

Conjugation

http://cooljugator.com/

Example sentence

http://tatoeba.org/

http://www.dictionarist.com/

Communication

http://www.italki.com/

https://hinative.com/

https://polyglotclub.com/

Offline dictionary

http://www.lingoes.net/

Encyclopedia

http://www.omniglot.com/