Curious as I've been debating about which direction to steer a friend who is a designer trying their build their own product. He's played around with python, and liked it, so I was going to suggest flask (since most of online tutorials start there).
But I've also heard good things about PHP/Laravel for beginners.
If you used Perl, mod_perl exists and CGI.pm is available in CPAN. The CGI protocol is as viable as it ever was (though of course there are new and improved alternatives).
There are a bunch of minimal stylesheets out there that get you some mobile compatibility, and no IE 6/early Firefox nightmares, so your code can actually be simpler than ever.
Besides that, Perl allows forward references and has moderately strong type checking. And mod_perl is the best-performing language accelerator.
I cringe whenever I have to downgrade to Python.