Middlegame Planning - The Ruy Lopez

One of my students recently sent me some interesting games in the Ruy Lopez.  He wanted some help figuring out middlegame ideas from both sides of the board.  VivaChe graciously gave me permission to show one of his games in an article.

Play through the game slowly trying to figure out what both colors are trying to do.  Around move 14 you should stop and spend a few minutes.  How should White play?  This game is a great example of middlegame planning when the position is even on material.  The pawn structure and minor piece activity determine the best path for White.