Work from home,does it sufficient for earning living?

There are ways to earn online, this is true, but it's different for everybody. USA, UK, and Canada (possibly Australia as well) have more opportunities to earn online then any other country. This being said, it's somewhat easier for us in these countries to earn, however, that doesn't mean it's impossible for those in other countries. Like Spike said above, it's something you have to work for and not something that will happen over night. You might be able to supplement your income, but you won't get rich off of it either.

yes it's possible that you can earn sufficient money on online jobs. mylot is one. others do writing, while some teach esl to people who want to learn english.