There's contract work - like creating little websites or web apps for people. So, learn things like Wordpress, CSS, Javascript, image editing, to start.

If I were him, I would first ask around - family, local businesses, organizations, etc. to see if someone needs a website or internal database or something like that, and then learn what you need to learn to do it. Another option might be to find groups or small businesses or individuals that do coding and see if he can learn from them and help out.

What I wouldn't do is just try to learn programming for its own sake - such as taking a course or buying a book without any idea of how it might be useful. He'll just forget it and perhaps even decrease his interest in programming. Flip it around and find a project first, a reason to learn programming.