I worked with Perl for years, and I don't recommend it for a beginner. There are just too many idiosyncrasies that belong specifically to the language that you'd be better off with Python for learning the basics.
I'm also not really sold on that book, which from the code samples looks really old. I'd recommend two books: Modern Perl and Perl Best Practices.
Edit: I'd also recommend working in Go but potentially the way i/o intersects with interfaces makes it a bit more challenging.
In the UK at least there's a persistent cost-of-living battle being fought, so we're not spending as much as we were, and large game production has reached a tipping point where the number of purchasers aren't growing but costs are increasing, so: studios contract; or games are taking longer to make; or games are made with a smaller scope. So basically, there's less to upgrade your console for.
I mean, for me personally, everytime I think of upgrading from a Series S I find it hard to justify because most games run quite well.