first feed him dried blood worms or sometimg really tasty and watch closely so he knows your presnece is near, then feed him again with you finger near the food, it takes time and patience, and gradually he will be eating out of your hand! You can also make him jump in the air, but preferably not to if you don't have a lid as this encourages the fish to jump out of the tank. It also depends on his personality, i had a betta fish once which took ages until he could eat out of my hand, but i also had another one who learned fast and was very brave :). Hope that helps.
all i did was stick a pellet on the tip of my finger and hover right over the surface. he just jumped for it
that the stupidest idea ever but I was able to get a gourami to eat from my hand by getting my finger a little wet and sticky a flake on it. try that
well, try getting your hand closer each time, and eventually he might be willing to eat from your hands. thats my idea, good luck