San Bernardino County Library Has Great Stuff

Patrons of the San Bernardino County Library have free access to online Mango Languages (under Electronic Resources):
Arabic (Levantine)
Chinese (Cantonese)
Chinese (Mandarin)
Croatian
Czech
Danish
Dari
Dutch
Farsi (Persian)
Finnish
French
French (Canadian)
German
Greek
Greek (Ancient)
Greek (Koine)
Haitian Creole
Hawaiian
Hebrew
Biblical Hebrew
Hindi
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latin
Norwegian
Pashto
Pirate
Polish
Portuguese (Brazil)
Russian
Slovak
Spanish (Latin America)
Spanish (Spain)
Swedish
Tagalog
Tamil
Thai
Turkish
Ukrainian
Urdu
Vietnamese

Also several courses in English as a Second Language:
لإنجليزية للمتحدثين بالعربية
教粵語人士講英文
针对中国人（母语为普通话）的英语学习
Anglais pour Francophones
Englisch für Deutschsprachige
Αγγλικα Για Έλληνες
Inglese per Italiani
日本人のための英会話
한국인을 위한 영어
Angielski Dla Polaków
Inglês para Brasileiros
Английский Для Русскоговорящих
Inglés Para Hablantes De Español
Türkçe Konuşanlar için İngilizce
Tiếng Anh Cho Người Việt Nam

If you don't have access to a public library that offers Mango, Online Foreign Service Institute Language Courses are another alternative for free language learning (albeit a little old-fashioned).

And a list from Open Culture.