To get to some of the Valencia Train station's (higher number) platforms it is necessary to walk all the way down the right side (right side, as viewed from the main entrance) of the train station, to the back, and go outside.
Photo Above - the ticketing lobby of the Valencia Train Station. The information office is located at the right end of the ticketing booths.
Photo Above - the Valencia Train station enterior, to get to the higher numbered platforms you would walk all the way down to the end of the building and take a slight right.
Photo Above - the bull ring is on the left side of the photo, main entrence to the train station is shown on the right.
Learn more about taking trains in Spain
More info about Train Station on the Valencia City
Guide (outside link - will pop up in new window)
Go to the Valencia top page