Resources

 Korean

Dictionary: Naver

Onomatopoeia: Live Journal

Relationships: Live Journal

Slang: Live Journal

Weather: Live Journal

Learn Korean: How to Study Korean

Reddit: Beginner Resource thread

Learn Korean: StudywithBee

Master: Google Docs

Master: LLK 

Japanese

Dictionary: Jisho

Dictionary: Weblio

Idiom Dictionary: Kotowaza

Learn Kanji: Wanikani

SFX Glossary: Jaded Network

Chinese

Dictionary: bab.la

Dictionary: Pleco (app)

Dictionary: MDBG