Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
You want to know everything there is to know about sheep (し). Why? Because you are a busybody who wants to know everything. But for now, you'll settle for sheep. Right now all you know is that sheep are soft, come in many colors, and that they have 360 degree vision with their weird, rectangle eyes. There's even more to know, so you better get on it!
I don’t know anything.
Do you know how to reboot the router?
As you know, Koichi is a robot.