A lot of work from home opportunities are complete scams. But there are some ways of making money from home.
One way is to look into legit companies, that allow remote working. Some offices allow there employees to work from home remotely as long as you have a stable internet connection.
Other ways are starting an ebay store and sell stuff on ebay. Some make a good living from ebay.
Another way is creating a website and use google adsense to make money online.
Adsense or other ad networks won't get you rich overnight though.