Most stores charge around $30. I feel that that is over priced, so see if you can find someone in your area that will string the stick for around $15 (thats what I charge).
free
no you can not but you usually get away with it
It depends on what you mean by "tougher." Boys lacrosse is more aggressive and they are allowed to check the body as well as the stick. However, they wear a lot of padding and have a large pocket in the netting of their stick that makes it easier to keep the ball in. Only stick to stick checking is allowed in girls lacrosse, but the only protection they wear is a mouth guard and goggles and they do not have the large pocket advantage that boys do making it more difficult to maintain possession of the ball.
no u cant
Mainly white for boys and yellow for girls. The MLL uses orange balls.
Yes the boys head is thicker and has a much deeper pocket
This question is impossible to answer because women's lacrosse sticks are measured as an overall length (including the head). According to US Lacrosse and NCAA rules, a woman's lacrosse stick should measure between 35 1/2" to 43 1/4". These are overall lengths and NOT just shaft length.
For equipment Yes
It can be difficult when you first start but there a million videos that will teach you online if you follow the directions it shouldn't be to hard. google it
Unfortunately not. Girls lacrosse is almost a completely different sport compared to boys lacrosse. Not only will you be physically unable to play boys lacrosse, they will not allow it. Sorry
Stick Helmet Shoulder Pads Gloves Arm pads Athletic cup Mouthpiece Cleats
In boys lacrosse, the nets are square; 6' by 6'