necessities ↴

• hiragana/katakana;
• essential kanji;
• kanji alive
• japanese IME;
• anki flashcards;

genki {↓bottom↓} ↴

• tae kim japanese;
• rikaisama sources {firefox only};

websites ↴

• japanese stackexchange;
• erin.ne {video + script};
• yomiuri {column of short japanese lessons};
• imabi {grammar};
• wikipedia {surprisingly comprehensive and useful};
• memrise;

grammar ↴

• tae kim, site seems to be down quite often so you might want to download this;
• jekai;
• niwasaburoo {book about japanese grammar, written in japanese};
• hello, school;
• wikibooks;

helpful forums ↴

• guide to japanese;
• the japanese page;

kanji ↴

• kanji - koonhii;
• ☆ {a list of the 3622 most common kanji characters found in the japanese wikipedia, along with their frequencies};

listening practice ↴

• njuku;
• jclab;
• simular radio;