These are courses in a particular area, such as public speaking, the how-to’s of making money online, making and selling crafts, or academic subjects like accounting or European history, etc.  The courses should give a wealth of information that people will be willing to pay for.  Some of the most lucrative online courses are those that will help students further their careers or improve their lives in some tangible way.

Jessica from The Selling Family was looking into how to make money from home after she was let go from her job, when she came across the idea of selling on Amazon. She now makes a full time income from FBA, enough for her husband to quit his job too so they can both stay at home with their son. They have a free 7 day email course which will teach you:
Build your audience on a course community: If you’re just getting started building an audience for yourself and want to leverage communities already actively looking for content you can choose to host and sell your online course on a site like Skillshare or Udemy. These are easy, cost-effective ways to build an audience and test your niche to see if there’s demand for it.
If you want to help shape digital products in their early stages, joining an online focus group or answering survey questions is a great way to make extra money online. They don’t pay as much as some of the other options we’ve highlighted, but you can join groups on sites like Survey Junkie, Swagbucks, and IPSOS that pay out through Amazon gift cards, check, or PayPal. You’ll be asked to provide a bit of information about your demographics (age, location, etc…), but after that you can get going making money through surveys.
Regardless if you need to earn some fast cash or we're just talking about making money in the grand scheme of things, there's an important psychology that needs to be mentioned before getting into the strategies. If you study Freud's model of the mind, you'll discover the Psychic Apparatus. It's the three-part construct in your mind that controls all of your behavior.
Over the following months, I kept a close eye on what he was doing and it was easy for me to see that he was messing up the paid campaigns that I had built, but was still clearly making a ton of money. The search engine optimization (SEO) work to help him rank higher on Google for a number of popular searches ended up helping him for a long time until his website one day disappeared. I estimate the work I did for him made him at least $5 million, but I still made a little over $200,000. Still a super solid return on my time. 

You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort. 
i hate when people bullsh*t you (me), so i wont be a di*k. CashCrate is free to sign up and they have offers and surveys that range from $(.)50 thats fifty cents to 4 dollars and they also have offers that require a credit card, but you can earn up to 40 dollars for one survey. this survey that im talking about is one for a credit card. you register for one using valid info and your credit card number (probally so they know you have a bank account ) and if you qualified you get the credit card and 40 dollars for doing the offer through CashCrate.
I’m Theresa Oliver by name. but I live in USA, Few months ago I was in financially strained, and due to my desperation I was scammed by several online lenders. and due to my profession as i am a single mother, with 2 kids and the whole world seemed like it was hanging on me, and i complain and disscuss with a friend of mine on social media, who lives in (POLAND) who referred me to a very reliable lender called (Mrs Antonia Rowan) from (CREDIT-SUISSE) Loan Services, she was the saviour GOD sent to rescue my family with a loan $ 85,000.00 USD with 3% interest rate, without any stress, contact her [email protected]