Ah, that's fair enough, I should really add a training mode. That is good feedback! Thanks for trying!
I switched over to Chrome, and even Safari, and it was better, so it seems like Webkit/Blink/V8 is the best browser scoped runtime, for some reason.
Also, I created a private party link, and figured out how to add an AI bot, after learning the controls.
The AI bot was still too strong, and beat me every time, so I need dumber bots, to have more fun up front. I sent the link to myself, and opened it up in multiple private windows, to learn the rules, against dummy sessions I created by invite.
But either way, maybe add a default practice button, that puts people in a private game, against a really weak AI, and you have your trainer option for new users.
I think a big, obvious training button sounds like a good idea. Especially for users that get killed in a competitive game with other people.