Jisho is a powerful Japanese-English dictionary. It lets you find words, kanji, example sentences and more quickly and easily.
Tae Kim's Guide to Learning Japanese
Learn Japanese from cute aliens
List of Japanese verbs
Memrise - Vocabulary and Kanji for Chapters 1-6 of Genki 1 Second Edition
Kanji Damage - learn 1700 Kanji in a fun way.
List of kanji radicals by frequency
Japanese Rule of 7