Beginner's Girls Lacrosse?

So next year I am planning on trying out for the JV girl's lacrosse team. However, I haven't played lacrosse before, and don't know too much about it. I am hoping to formulate some plan/schedule over the summer to train and prepare for tryouts. Does anyone have any advice from past JV tryout experiences? What is the basis of what I need to know, and what equipment I need to get?