Just an FYI per the WI DOT:
Driving vehicles in a roundabout
- Slow down.
- Watch for and obey traffic signs.
- Move into the correct lane for the direction you want to travel.
- Yield to pedestrians and bicyclists as you enter and exit the roundabout.
- Look to the left for traffic.
- Enter when it is safe.
- Keep your speed low and stay in your lane within the roundabout (do not change lanes within the roundabout).
- Exit carefully to your destination. Use your right-turn signal, in front of the splitter island just prior to your exit, to indicate your intention to exit.
My 2 cents:
Single lane roundabouts are easy. Just drive through til you get to the exit you want. If you miss it, don't panic, just keep going in a circle until you get to it again.
For double lane roundabouts, the RIGHT lane is to turn right at the "intersection" or to continue straight on the road you are on. The LEFT lane is to go straight, to turn left at the "intersection, or to do a U-turn.
NEVER turn left into a roundabout. When you are approaching one, choose your lane, yield to traffic already in the roundabout coming from the left and proceed when the coast is clear. If you miss your turn, keep going around til you get there again.
Never change lanes in the roundabout. Stay in your lane. Unless, of course, there is noone else around.
It is always better to go slow if you are unsure than to potentially cause an accident. Then people would really be ticked at you. Don't worry about the overconfident ones. You concentrate on being safe. Once you have done it a few times, you will be one of the overconfident one too.
Roundabout should be treated like a yield sign. You do not just pull out into traffic. You slow down, look to the left to be sure noone is coming, then you enter. And always watch out for the ones who see you in the roundabout but pull out in front of you anyway. Like I said, it is better to slow down and be attentive than to be a statistic. There are lots of people out there that are just as confused as you are.
Here is a great diagram per the DOT:
http://www.dot.state.wi.us/safety/motorist/roaddesign/roundabouts/docs/br-turnbyturn.pdf
And remember, patience grasshopper. HTH