Assuming right-hand side of road driving and right-hand (anti-clockwise) directionality of travel.

1. Look left. Clear? Proceed. Not clear? Yield.
2. When safe to do so, enter the roundabout. Locate your exit.
3. Exit the roundabout.

Corollary: never stop in a roundabout. Go around more than once if you have to, but don’t stop.

I assume roundabouts in Australia and England and UK colonies that drive on the left, all instructions are direction-opposite.

Assuming left-hand side of road driving and left-hand (clockwise) directionality of travel.

1. Look right. Clear? Proceed. Not clear? Yield.
2. When safe to do so, enter the roundabout. Locate your exit.
3. Exit the roundabout.

Corollary: never stop in a roundabout. Go around more than once if you have to, but don’t stop.