If you're projecting from your own laptop, shut down any apps that might give bouncing notifications. Really, just shut down all apps. And don't have your browser open with bookmarks tab and window tabs showing.
Don't spent 10 minutes on the introduction. A very common mistake is people step too slowly through the setup material. Just lay out the problem and GO. In fact, even throughout the talk, assume the audience is smart and can fill in the obvious blanks.
Don't spent 10 minutes on the introduction. A very common mistake is people step too slowly through the setup material. Just lay out the problem and GO. In fact, even throughout the talk, assume the audience is smart and can fill in the obvious blanks.