How to make halal money online?

just keep away from "riba" and "lotery" . those are not halal!!

from what i read, as long as you earn the money from proper method that is not wrong in islamic teaching, it should be halal. Prophet Muhammad was a business man as told in his history, but none of story or hadith etc that mention he will check on his buyer to ensure the money they use to pay is halal. Some thief may use the money they stole to buy products from a muslim seller. I supposed the money is only 'haram' for the thief to use. good day!

Nothing wrong with wanting to earn money. You mention that the question is mainly for Muslims, but anyone can earn online. If you know anything about the Internet its really easy to start earning today. checkout http://offerscrate.com

there are sites like constant-content through which you could sell articles. for this you need to write unique articles in good grammar.

If you know english you can try article selling. I think its halal cuz you write article and you sell them.