There are a lot of ways for you to earn online, but I cant make a judgement on how fast it will happen.

But with hard work, persistence and focus, you can achieve this in record time.

Here are some recommendations:

1 Join Affiliate Marketing

Affiliate marketing is one way to go when you want to make quick bucks.

You earn commission for every successful referral. All you should do is to promote the products, and bring the customers to the companies. The more sales, the more commission you will get. You can search for Jumia, Amazon, Konga, Dealsdey, Share A Sale, Commission Junction, and so many others.

2 Blogging

You can make money by setting up your own blog. This can be done in less than 4hrs using popular platforms like WordPress, Joomla, Drupal, etc.
Then write a lot of rich and useful contents that will drive traffic to your site.

Then signup for Google Adsense and any other ad display program.
Find the FB groups relevant to your article, and promote your articles there.
With time, your traffic generates revenue and you can earn minimum $5 daily.