Some advice

Some advice for any young goalie is watching as much lacrosse as possible. You can learn allot from watching other goalies. These goalies may play a completely different style of game from you but you can use some of their tricks to your repertoire.
Along with watching the goalies watch the game. The more you learn how offensive players move and their tendencies the better equipped you will be when you face shooters at your level.
A good way to learn lacrosse is by officiating. Officiating will make you watch the game through a different perspective as well as learning all the rules. This will also get you use to being yelled and heckled at by fans and parents.

Darrell Royal: “Luck is what happens when preparation meets opportunity.”

A goalie must have one overriding quality-- he must want to be a goalie. - Emile Francis