If there is a subject you are knowledgeable in, or know plenty of people who are knowledgeable about something, then use that to make money.
Set up a subscription based service to train people. Offer them courses, complete with exercises and marked online quizzes. Award them with certificates upon completion.
Grow the business by finding other knowledgeable who can put together new courses on a wide range of subjects for kids and adults alike and expand your reach into new markets. More and more learning is shifting to the online world, making this the right time to establish yourself and capture some market share.