Can anybody give me tips and strategy to win a fight?

Im 5’4”, 108–115 lbs. And I’ve never gotten into a fight before. I already know that i have to let my oppenent swing at me first. But other than that i know better. Do I take him on the ground first? Head or Body first? Fighting styles? I don’t wanna walk away from a fight, because than everyone is gonna say that im a chicken.