To get the Tri Pass, you must progress in the game until you get to the Cinnabar Gym. After you beat it, when you leave the gym, Bill appears and talks to you. Then he will give you a Tri Pass and sends you to One Island to talk to Celio.
firs go and get tripass then contest place beside there is a ship to take you to a island go to the first island and there latious will be
just win league champion and go! go to the port.
You need to catch more than 60 Pokemon and talk to Oak and get the National Pokedex from him and then go to Island One and talk to the guy near that big weird machine and he'll exchange your tripass for his rainbow pass which allows you to travel to the Sevii Islands (islands 4 - 7) and the first 3 islands.
You can't go to Johto in Pokemon FireRed or LeafGreen.
Pokemon league
go to vermillion city
You go to the docks in Vermilion City.
you go to the Pokemon center and he is there voila
firs go and get tripass then contest place beside there is a ship to take you to a island go to the first island and there latious will be
just win league champion and go! go to the port.
first you have to beat blane the 8th gym leader then after you go out of the gym you will see bill he will give you the ticket.
you go to the ss anne he gives you a ticket when you talk to him
Bill Gates strted high school in 1969 for allll those dummies who didnt know that but this the true answer.
catch diglet or dugtrio or just go see bill and go past the house that was blocked by police, beat the rocket and you get it after you beat him
You have to go and then go and then go to your home in Pokemon then you have to have a Lugia to have a light ball in firered
Bill asks you to go to one island not four island and second of all if you finish the 1-3 island sidequest and get the ruby and deliver it to Celio you can go to islands 4-7.
go to cinnabar island and once you beat the Pokemon mansion Bill will come out and offer you to go with him to first island.