Want to do more than type words but instead create? Consider a career in writing. There are so many ways to be a writer (think blogging, fiction writing, and children’s books), and most of them can be done from home either as a telecommuter and a freelancer. The great thing about writing is you can start small with very little experience. You won't make a lot at first but as you build your portfolio you can expand into more lucrative types of writing.
To do that, you have to harbor a few fundamental guiding principles in your mind. Today, if you're at all serious about generating a full-time income (and more) from your online activities, then you need to focus on passive income as opposed to active income. Sure, the active income will help you survive. That's the scarcity mentality at play. But it's the passive income ideas that will help you thrive.
Everything the author did math wise was correct. For you people who you keep on reading it incorrectly, I advise you to stop blaming the author for doing something wrong just because you did not take the time to read what they actually said. For you people who keep getting the math wrong, if you do not remember how to do this kind of math, then do not blurt out what you think the correct answer is. Do not try arguing something you know nothing about.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.