Ok first talk to the people at the power plant
the'll tell you stuff the go to the gym whose gym
leader is misty there will be a guy in there follow him to the cape and beat him up then go to the gym and look in the center
ring of water.Whoooo the go to lavenders radio tower talk to the manager he'll give you a expn card then go infront of the snorlax
and swich to poke flut music and click the A button
while next to it then its lvl50 so eather capture it ore kill
it then you can go pass them theres 2 snorlaxs in the game. I hope that helps.