They choose any piece they'd like to move to begin the initial attack, or the opening. They move a piece, and black counters. The opening is one of the most important parts of the game. There's no real "right" way to do it -- everyone has their own style and you'll find yours. But there are a few things to keep in mind:  Do not go about about attacking for now. In your opening, you're just getting your pieces to their most useful posts. You want them to be on good and safe squares. Generally, make only 1 or 2 moves with your pawns. Then start concentrating on your more powerful pieces -- bishops, knights, queen, and rooks. "Development" (getting your pieces to active squares, such as the center) isn't complete until all of these pieces have moved. A lot of your opening moves depend on your opponent -- you'll just have to feel out the game. So observe and see if you can guess what his plan is. This game is more about anticipating threats and foresight than anything else. If you'd like, that is. Plenty of beginners don't worry about it. But if you're curious as to how to make this game a little more French and a little more complicated than it already is, why, here's how:  If you recall, your pawn can move 2 spaces forward on its first move. Let's say you do just that, landing next to your opponent's pawn, on the same row. On the next move -- and only the next move -- your opponent can capture your pawn en passant (which literally translates to: in passing). Normally, pieces can only capture by moving into the square that had been occupied by that enemy piece -- but this is an exceptional case where the enemy pawn moves into the square that the pawn has passed over and still captures that pawn. Again, this can only happen right after a pawn has made its initial 2-space move. If a turn goes by, the opportunity is lost. This move is unique only to the pawns and no other piece. Thus you cannot capture with the queen or a knight by en passant. And thus goes the game! You and your opponent take turns, trying to get...

TL;DR in Chinese:
白棋先走，黑棋紧跟。 掌握“吃过路兵”的规则。 你和对手轮流出招，都一心想着吃掉对方的棋子，干掉对方的王。 三思而后行。 掌握“王车易位”。 将死对方的王取得胜利。