[glow=red]If you are a beginner you will need to purchase wind surfboard that has a cost of 100,000$. Only after defeating the gyms from each location you will be able to travel by train/ferry for that particular location.[/glow]
[glow=red]In New Bark Town there is an aquatic route that connects Johto to Kanto. After cross the cave you will already be in Kanto. Good luck~[/glow]