The NL Efitor

I wanted to make a short coaster.. but i really dont know how to get my coaster go up.. or how to set the station higher :S

Can somebody help me out?

In between track segments are small blue balls. Click on the one you want to move, and move it by pushing your mouse around in the direction you wish to move the segment. If your mouse has two buttons, use the left one, and if it has one button, well, use it.