Wait, what's the candleholder called?

Depends on which one you mean. The one above is called a "menorah." Count the arms: Seven total. It's a pretty standard candleholder in synagogues across the world, for use on the Sabbath or, like, if it's way dark and your phone is out of battery.

A chanukia is the menorah for use on Hanukkah (see T-Rex above). It has nine arms: eight for each night the miracle oil burned, and one for the shamash, which is the "helper" candle. The shamash is typically higher than the other candles, and is the one you light first. Then, each night at sundown you use the shamash to light the other candles right-to-left (just like reading Hebrew). You restart every night: night one, you light the candle on the far right. Night two, you light the candle on the far right and the one next to it. Night three, you light the candle on the far right, then the second, then the third. And so on and so forth.

There are also some prayers you say while you light the candles -- ask (almost) any Jewish person on earth and they can recite them like the lyrics to the "Fresh Prince" theme song.