Fantasma: The Jittery Ghost:

Little Fantasma has just been invited to the party of a
lifetime! Everyone in town will be there. There's just one
slight problem... Fantasma is too afraid to step outside of
his own home! How will he ever make it to the party now?
Fantasma: The Jittery Ghost is a fun and courageous tale
that follows an easily frightened ghost and the
tremendously spooky journey ahead of him. Follow his
adventure in this book!