The essential European roulette table layout is rectangular with chip placement spaces for numbers from 1 to 36, plus a space for zero at the top (above 1, 2, and 3). Familiarising yourself with the differences will help you feel at home regardless the layout.
There are distinct European, American, and French versions whose variances include both the table surface and the wheel itself. Unless you've travelled a bit, you might not realise that the roulette table layout you know and love isn't the only one.