You get a map in the beginning to show you where you have to go.
This is the screen with all the levels, it also shows a leaderboard (the trophy), a journal (the book) and a customize button (the paintbrush). The setting button is in the right top screen and in the left top screen shows the stars you have achieved.
You can customize your boat.
You have to swipe to move forwards. Swipe left or right to go that way and swipe down to stop.