Want to learn Japanese at home.

I want to learn Japanese. But don't want to go to school. Is there any online lesson or offline lesson recommended?

https://www.erin.ne.jp/en/

http://thejapanesepage.com/

Those are the only two I know off the top of my head, there's probably plenty more though.

If you're looking for a print textbook to supplement that, I would recommend the old standby Japanese for Everyone by Susumu Nagara. The biggest drawback is that its audio component is sold separately (but, then, you have several strong audio resources on the internet already). It's quite excellent and efficient in teaching grammar, though.

I'm afraid I have no experience with the Genki series, the most popular classroom textbooks nowadays, though it does get good reviews. I would stay away from the Nakama series, though, as a great many of its exercises are geared expressly toward a classroom setting. It also introduces material in a counterintuitive order, delaying certain fundamentals for an excessively long time.

www.123japanese.com

there are other ones like www.japanesepod101.com but the draw back of this site is that, its a 7 day trial site but within that 7 day trial, you can have access to everything including the 'preimum' stuff.

same as you,i am learning japanese from self-study from the internet out of interest. i just signed up on that site and downloaded all the newbie to amatuar podcasts. total around 2.3 GB.

as for learning hiragana and katakana, use www.RealKana.com

also, www.jisho.org is a very useful site but you need to learn hiragana or katakana first before using it since they only display those and no romanji. good luck.

www.freejapaneselessons.com is also a nice one for beginners.
Denshi Jisho has a "kana as romaji" option, so you can use it even if you don't know japanese letters at all.

Smart.fm is great for learning Hiragana, Katakana, and eventually Kanji and just useful vocab.

http://www.guidetojapanese.org/completeguide.html
good grammar guide

http://japanese-lesson.com/index.html

http://japanese360.org/topic/8331020/1/
Hiragana stroke order

http://japanese360.org/topic/8331074/1/
katakana stroke order

http://www.studyjapanese.org/

http://www.tanos.co.uk/jlpt/

http://www.learn-japanese.info/

http://www.realkana.com/practice/

http://www.onlinenihongo.com/

http://rcl.pliable.us/J-verbs.html
verb conjugations

http://rcl.pliable.us/J-adj.html
adjective conjugations

http://www.sf.airnet.ne.jp/~ts/language/number/japanese.html
numbers!