Its called the caro-kann defense. It is one of the more popular responses to e4. The idea is that the pawn on c6 can now support a push of the d pawn to d5.
It has a reputation for being extremely solid. I don't play it myself, but it is a popular opening.
Please help me understand this. I cannot see any value at all in black's decision 1. e4 c6.
Maybe I'm ignoring something blindingly obvious, but I've only been playing chess for about a month now, so I'm still a little rusty on strategy.
Thanks.