Some basic strategy:
Eight rocks are thrown per side, per end. The 'lead', 'second', 'vice' and 'skip' each throw 2 rocks. Obviously, the teams alternate.
The skip holds the broom for the first three team members (first six rocks), and the vice holds the broom for the skip rocks. The skip has a broom, but almost never sweeps. The down side? Everybody wants to be a skip.
The team that throws second, "has the hammer". Makes no damn sense, I know.
If you score points while you have the hammer, you score points. If you score points without the hammer, it's a steal.
Once you score any points, the hammer goes to the opposing team.
Now, evenly match teams have no problem scoring a single point if they have the hammer (they throw last). If there are no rocks in the house (rings), they will throw their rock through the house, scoring no points, but the get to keep the hammer. If there are opposition rocks in play, the skip with the hammer (last rock) may be 'forced to take one' rather than give up the steal.
There, I'm done. You should now be able to watch curling and yell at them with something more intelligent than a Newfie, "HARD!" (sorry Eakers)
Regards,
Craig