Hey Dave! Welcome to the Twitter API!
Unfortunately, you can’t just put stuff in your browser, as that doesn’t access the API with the right authorization, and we don’t offer ready-made test apps.
The first thing I’d recommend to you is checking out [node:138, title=“the Twitter API Console”].
Once you’re comfortable with that, you should try to get those cURL commands working.
Then, you might be ready to try your hand at implementing some of the [node:126], many of which have what you might call built-in “test apps” that let you try out some basic functionality to verify that the library works for you.
Good luck!