There are a lot of websites you can learn Japanese online from.
Learning a language is not hard, it just takes a long time. It would take about 4-5 years to be fluent in Japanese. And you have to keep at it.
123Japanese is a very good website for vocabulary because it is organised, and has the largest vocabulary list both in romaji and kana.
JapanesePod - This is a good website if you want to listen to lessons rather than read and they have free mp3 lessons daily.
JustAnswer - You can ask questions related to Japanese language and online experts will answer your questions personally.
I've added some useful resources to the related links below.
http://www.123japanese.com is a very good website for vocabulary because it is organised, and has the largest vocabulary list both in romaji and kana.
One that has lots of information, Esp good for kanji is,
http://www.japanese.about.com
The only downside to this website it is the information can be very hard to find
http://www.japanesePod101.com . This is a good website if you want to listen to lessons rather than read and they have free mp3 lessons daily.
Start reading daily with Yomuzoku, online Japanese course. This tool provides interesting conversational Japanese stories,news and gossips with their exact meaning and pronunciation.
One can learn to speak Portuguese online through the AOL website. Rosetta Stone is another option to learn to speak Portuguese. You can buy it online or download it to your computer.
Russian people can learn to speak Japanese. There really are no cultural boundaries limiting attempts at becoming a bilingual speaker.
When you finally learn to speak fluent Japanese
It would take a person of likely impossibly extreme genius to learn to speak Japanese fluently in a day.
Japanese people do not speak Chinese unless they have learned it in school or have lived in China. For the languages of Japan, click here.
There are many online classes available where you can learn how to speak to speak Spanish. The following website provides the information you requested: www.unispain.com/Online-Spanish-Courses.htm
You can learn Japanese on the following site: http://www.freejapaneselessons.com/. They have a great program.
French. If you speak English, French has easier writing and grammar; Japanese has easier pronunciation.
You should try learjapan.com which is by far the easiest and most comprehensive online solution for learning Japanese language. It is also supported by Japanese government.
There are many online resources one might use to learn how to speak English. A popular website includes the Duolingo website, as well as the ESL Party Land website.
You can learn to read, write and speak mandarin online at chineselearner.com. It's free. Here's the chineselearner website: http://www.chineselearner.com/