Around 2000 or so, I used to work in tech support for a software company who had like 5000 Windows-based customers and 5 running Solaris. My boss chose me to learn Solaris when the previous “expert” left. I bought this book and started hacking. Good times!
That went to shit as soon as Adobe took over.
I didn’t like that the iPhone never supported it, but in hindsight they did us all a fucking favour.