How do i fight and win with someone that is a little bigger than me?
Most martial arts, especially one of the many Kung Fu out there or Judo, will teach the smaller, weaker guy to overcome the bigger guy. I’m assuming you don’t have time for an official class. Go find a friend or a person with some experience willing to show you some stuff, go learn some moves off youtube, and I wish you the best of luck. I’m going to go ahead and assume he’s not a pro fighter or anything, so a few basic moves and pointers is all you’ll need. Good luck and try not to get caught in a headlock.