You play the game... That is how you beat it... play and dont give up.
look at the Zelda Walkthrough.
The credits roll.
beat the the dark temple floor
follow the beat ;)
This will answer evrything for you: http://www.zeldadungeon.net/Zelda13-spirit-tracks-walkthrough-06.php
To get Zelda's(3rd generation) body back in The Legend of Zelda: Spirit Tracks, you must beat ALL five temples in the game, (forest ,snow ,ocean, fire, sand)and defeat the second of the three part final boss.
go to the highest floor you can in the tower of spirits and beat it
go on zeldadungeon.net all of the bosses for spirit tracks are on there with the best methods of how to beat them.
Its easy really. just do what Zelda and anjean tell you to do and shoot the last boss with light arrows. last boss sucks.
There are 2 Zelda DS games. Here's a link to both The Phantom Hourglass and The Spirit Tracks walk through. http://www.zeldadungeon.net/Zelda12-phantom-hourglass-walkthrough.php http://www.zeldadungeon.net/Zelda13-spirit-tracks-walkthrough.php
Play through it and beat the final boss.
distracked it with Zelda then trike from the reer