A goalkeeper is one of the most important players in the soccer team.
His job is to prevent the other team from scoring. Whether the goalkeeper punches the ball, catches it, or kicks it, as long as the ball does not go past the line, no point is scored.
The goalkeeper is also the leader of the team's defence. He is able to see the entire field and can instruct his teammates. The keeper can organize his team and have them pull up or stay back if needed. He can control the tempo of the game (hold the ball longer, get rid of it quicker, etc.).
The goalkeeper should have really good eye-hand coordination, not be afraid of the ball, and be willing to basically "sacrifice" his body for his team by diving in front of attackers who will purposefully knock into the keeper to score.
See the link below for more information:
http://www.dummies.com/how-to/content/goalkeeper-defending-the-soccer-goal.html
A Goalkeeper Guide link:
http://www.soccer-training-guide.com/soccer-goalie.html
He is in the goal the whole game. He has to keep the ball from getting into the goal. If the ball goes into the goal the other team gets a point and the goalie failed to keep the ball out. The goal keeper is the only one in the whole game (other than the opposite goal keeper) allowed to touch the ball with his/her hands.
Nothing requires a goalkeeper to have a maximum weight.
Casillas
The goalkeeper.
Gordon banks
julio Cesar (Brazil )
the goalkeeper
no :-x
Play has to stop in order to bring on a substitute, whether it be a goalkeeper or an outfielder.
To fool the goalkeeper.
gianluigi buffon casillas
No they can not do it as they can harm the goalkeeper. Henry id that recently to celebrate a goal, but he got fined heavily.
It takes a lot of effort and trainning. Join a well established soccer club and get a proper goalkeeper kits.