WORK IN PROGRESS.

ANYTHING MARKED WITH A * IS AVAILABLE IN THE TORRENT HERE: http://www.demonoid.me/files/download/2836246/23011122

[Websites]
Introductory Lessons:
https://www.erin.ne.jp/en/lesson01/basic/index.html (video + script)
http://www.yomiuri.co.jp/dy/columns/0002/ (column of short Japanese lessons)
http://learningjapanesewithanonymous.blogspot.com/
http://www.textfugu.com/free-lessons/

Hiragana & Katakana:
http://www.asahi-net.or.jp/~if2n-szk/mnemonics.html
http://www.canyouchopstick.com/2011/01/katakana-mnemonic/
http://kana.icann.se/
http://www.csus.edu/indiv/s/sheaa/projects/hiragana.html
http://www.realkana.com/
http://www.umich.edu/~umichjlp/Hiraganapro/
*http://www.guidetojapanese.org/pdf/hiragana_trace_sheet.pdf
*http://www.mediafire.com/?9nwfk83g09yo4xo
http://nihonshock.com/2010/02/japanese-cheat-sheet-2/

Grammar:
http://www.guidetojapanese.org/
http://www.csse.monash.edu.au/~jwb/j_gram_summ.html
http://www.jgram.org/
http://www.geocities.jp/niwasaburoo/index.html (extremely well-written book on Japanese grammar, written in Japanese)
http://en.wikibooks.org/wiki/Japanese/Grammar

Helpful Forums:
http://www.guidetojapanese.org/forum/

Kanji:
http://kanjidamage.com/
http://www.guidetojapanese.org/learn/grammar
http://kanji.koohii.com/learnmore
http://www.jlpt-kanji.com/
http://www.asahi-net.or.jp/~ik2r-myr/kanji/listjouyou_en.htm
http://kakijun.main.jp/ (stroke order)
http://www.yamasa.cc/members/ocjs/kanjidic.nsf/SortedByKanji2THEnglish?OpenView (stroke order)
http://kanji.sljfaq.org/kanjivg/makepng-noscript.cgi?kanji=%E9%9D%A2&s=4&l=1 (stroke order)

Listening Practice:
http://www.njuku.com/
(Rosetta Stone)

Online Dictionaries/Thesauruses:
http://dic.yahoo.co.jp/
http://dictionary.goo.ne.jp/
http://www.alc.co.jp/index.html
http://zokugo-dict.com/ (general slang)
http://www.geocities.jp/tomomi965/index2.html (for idioms/set phrases)
http://thesaurus.weblio.jp/
http://www.media-k.co.jp/jiten/ (for 2ch slang/memes/catch phrases)
http://dbms.kokken.go.jp/nknet/Onomatope/category.html (onomatopoeia)
http://www.rondely.com/zakkaya/dic5/index.htm (onomatopoeia)
http://home.alc.co.jp/db/owa/s_kaydic?ctg_in=4 (onomatopoeia)
http://gogen-allguide.com/ (word etymology)
http://kanji.reader.bz/　(kanji readings, works for names too)
http://www016.upp.so-net.ne.jp/hougenn/ (for different Japanese dialects)

Other:
http://lang-8.com/ - (Practice Japanese by writing short passages, receive corrections from native Japanese speakers)
http://visualnovelaer.wordpress.com/2011/12/06/how-to-read-visual-novels-in-japanese-in-2-years-time-step-by-step-guide-%E2%80%95-learn-to-read-through-vn-or-anime/
http://www.memrise.com/ - a good (and somewhat amusing) way of learning kana and kanji.
http://japanese-speedtest.10fastfingers.com/
http://www.google.com/intl/ja/ime/ - Google's Japanese IME
http://www.polarcloud.com/rikaichan/ - Don't go anywhere without it.
https://github.com/dollar/kanjicaptcha

Smartphone Apps:
Obenkyo
http://www.realkana.com/
http://www.guidetojapanese.org/learn/grammar
Aedict - Japanese to English dictionary
Kanji Recognizer

[Youtube]
http://www.youtube.com/watch?v=WNFgyUsCwe0 - Learn Japanese with Yuruyuri
http://www.youtube.com/watch?v=oZEA54VJEdE - Namasensei, good motivational lessons.
http://www.youtube.com/watch?v=lrMkJAzbWQc - Japanese Alphabet Song

[Recommended Reading and/or Watching]
Yotsuba&!
Anpanman
http://www.portals.co.jp/isopp/
Kino no Tabi

[E-Books (PDF)]
Making Sense of Japanese Grammar (2.56 MB)
*http://www.mediafire.com/?d8hvs7jyb0fi156

Dictionary of Basic Japanese Grammar (24 MB)
*http://www.mediafire.com/?c1swbbihl97s77b

Dictionary of Intermediate Japanese Grammar (29.6 MB)
*http://www.mediafire.com/?7obxdz023iiw3c8

Dictionary of Advanced Japanese Grammar (65.4 MB)
*http://www.mediafire.com/?r61j67rmntthy9u

Barron's Japanese Grammar (83 MB)
*http://www.mediafire.com/?31h81oy1jx89e1x

Japanese Core Words and Phrases (3.79 MB)
*http://www.mediafire.com/?z1fcbxw4vbnfb2p

Japanese Particle Workbook (39.2 MB)
*http://www.mediafire.com/?4c4387dbbg86a43

101 Japanese Idioms (28.4 MB)
*http://www.mediafire.com/?4nub1o40kgdch1o

Japanese Verbs and Essentials of Grammar (82.1 MB)
*http://www.mediafire.com/?c3c83or0a5xz2dw

500 Essential Japanese Expressions (29.2 MB)
*http://www.mediafire.com/?lld8lo0nlspy72y

Japanese Beyond Words (27.1 MB)
*http://www.mediafire.com/?dcc3yaay9w4fj5c

Read Real Japanese (80.5 MB)
*http://www.mediafire.com/?sg2yr34ehldh6ir

Oxford Japanese Grammar & Verbs (40.1 MB)
*http://www.mediafire.com/?8xk6v525idpbdb8

JLPT - Teach Yourself Japanese (32.1 MB)
*http://www.mediafire.com/?lpwckercaq3mfiw

Genki I (150.4 MB)
*http://www.mediafire.com/?4dsxbexuv92xvuj

Genki I Workbook (28.6 MB)
*http://www.mediafire.com/?orjq8jfja8lj4aq

Genki I CDs 1 & 2 (102.1 MB)
*http://www.mediafire.com/?u4ab7xyd2pgi0k7

Genki I CDs 3 & 4 (118.7 MB)
*http://www.mediafire.com/?bjzhrte35es2e4z

Genki I CDs 5 & 6 (119.1 MB)
*http://www.mediafire.com/?2apq4wv4j2rs9qu

Genki II (162.4 MB)
*http://www.mediafire.com/?a2t5giuv35if4gm

Genki II Workbook (128.7 MB)
*http://www.mediafire.com/?mm77vpi9731okst

Genki II CDs 1, 2, & 3 (103.5 MB)
*http://www.mediafire.com/?6l55tomt2bnhrqq

Genki II CDs 4, 5, & 6 (95.5 MB)
*http://www.mediafire.com/?b0m4063od4ghcfm

Genki I & II Answer Key (65.9 MB)
*http://www.mediafire.com/?102h82qhflktjdt