offseason pitching workout

my season has ended and im going to start to hit the gym during the week i would like to know a workout plan i should do to improve my pitching speed,stamina and I wud like to be stronger for my school season what workout routine should i do to improve myself as a pitcher

I’d say focus on your core and flexibility. Go to
http://www.baseballtrainingsecrets.com/pages/home.htm
read all that you can. Jon Doyle knows his stuff.