I know everyone recommends the classics like 'Trifles' for a reason, but that reason is kind of...boring, isn't it? It’s always the go-to example, and while it's well-structured, I think beginners need something with more immediate, visual stakes. My local theatre group started with 'The Actor's Nightmare' by Christopher Durang. It's hilarious and deceptively simple on the page, but the panic of the main character, George, is something every new actor can latch onto instantly.
You don't need heavy emotional backstory; the situation is the entire engine. He wakes up on stage in a play he doesn't know, in a costume that doesn't fit, and everyone expects him to perform. The comedy writes itself from the mounting absurdity. It teaches timing, reactive acting, and how to build a scene purely from escalating confusion. Plus, it gets laughs, which is the best confidence booster for a first-time cast. We butchered some lines but the audience still howled.