Source: I wrote a book about a single function in React, it did okay.
Source: I wrote a book about a single function in React, it did okay.
And then once you're explaining the thing over and over again and need to get into more depth, write a book or training module. For example, some things need background knowledge on how coroutines work, and then you end up explaining why we use coroutines over threading, and so on.
Once you have some traffic coming in, promote a paid course/ebook where you build a full project/app or some bigger unit of work with the thing.
However, it did have nice second order effects on my career, and if I had written a book in an area that hasn't sputtered out (mine was on building voice apps for smart assistant platforms), I suspect it may have even lead to work directly.
Alexa/Amazon is still going, but there are rumors that layoffs will disproportionately impact this division, Google has shut down their APIs unless you're wanting to integrate with an Android app, and Apple has never really opened up Siri.
As for why—it's so hard to build a business on the platforms. They are geared toward "get in and get out" interactions and for things like ordering a pizza, you've already got your phone on you. I still think voice has life, and I love using my devices, but it didn't take off how I thought it might.