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

GrimPixel's recommendation

The Internet is a giant treasure. It provides so many free things for the human. The websites listed 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

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://www.dictionarist.com/

http://bab.la/

https://glosbe.com/

Conjugation

http://cooljugator.com/

Example sentence

http://tatoeba.org/

Communication

http://www.italki.com/

https://polyglotclub.com/

https://hinative.com/

Offline dictionary

http://www.lingoes.net/

Encyclepedia

http://www.omniglot.com/