I am following the opportunities for almost 4 years to earn money online and I think I have enough experience to share with you guys. Let me tell you something, no matter what you do, first you need to stop thinking that you will make money without spending some effort. Briefly, no pain, no gain.
So let's start;
Most of my successful attempts to earn money online are this kind of opportunities. I had worked for three different companies as a long-term contractor.
There is a position called as Assessor at Yandex web search engine. Basically, the responsibility of this position is that you will evaluate the tasks that are sent by the system. There are several task types and all types are depending on checking pre-determined criteria for several web pages. You can find the open positions from here. The payment in Yandex is done according to the number of tasks you have completed.
Appen is a global company named one of the Top 100 Companies Offering Flexible Jobs in 2014, 2015, and 2016 by FlexJobs, Appen offers work from home opportunities for flexible short-term projects as well as full-time corporate opportunities. You can find several available positions from here. Some of the positions are such as Web Search Evaluator, Social Media Evaluator. The payments are made upon your statements of kept actual working time.
Leapforce is a similar company to Appen and they acquired by Appen in November 2017. There are several available positions which you can find here They work with global companies such as Google, Facebook.
Lionbridge is a global company that generally works with Google. It has also positions like Search Engine Evaluator. You can apply from here.
I cannot get an acceptance from these websites except Yandex.Toloka because of where I live. But lots of different opportunities are available in this type of online money earning systems.
This website contains professionals of different areas and people can ask questions exchange for money. For example; you are a lawyer or a doctor and you want to earn money with your knowledge, this is where you apply for.
Yandex Toloka is a simple system that you evaluate webpages and complete some other tasks. They pay less than Yandex Assessor system but it is better than nothing.
This is Amazon's validation services and it accepts users from specified countries. You can find detailed information here.
Clickworker is a platform that you get paid for your work related to create or correct texts, participate in surveys or search and categorize data for us. You can apply here and find detailed information about the system. They pay via SEPA and PayPal.
Usertesting pays $10 via PayPal for every 20-minute video you complete. Content of the video is your real experience and you are making money while surfing on the net. Here is the link that you can learn the details. By the way, it only pays via PayPal and accept users that live in a country they can receive PayPal money transfers.
If you have an idea do not kill time on reading this post, go, do it! You can create a vlog , or some other content that can help you earn money on Youtube. You can ask my dear friend 
Another platform that you can offer your content may be Patreon. You can put your work on the market.
The websites such as Upwork, Freelancer, Fiverr provides you also earn money for your services.
This is not my field of expertise but as far as I observe you can make money just exchanging between crypto currencies. You do not need luck for it, just you need to distribute your risk equally and follow some experts on this issue.
I hope all this may help you even just a little bit, see you till next post.
Matt
