Freelancing services. You need to focus on 1 thing and 1 thing only – and that is acquiring a skill that you can get 1 client to provide a service with. You can learn these skills for free (and/or very cheap) through free content provided by software companies.
Here is a short 4 minutes video where I give my answer.
I also talk about this in more detail and share the links to some of these software companies on this page.