Goodluck with teaching your dog to fetch, just make it fun and make it seem like the ball/ toy is the best thing in the world.

I can sympathise with you at the moment, our new girl (Border Collie) has been a working dog all her life so never learnt how to fetch a ball, she is finally getting the idea from watching her ball obsessed brother play. She bought the ball nearly all the way back to me tonight at the park, but only when her brother was not watching hehe. And she would also drop the ball as soon as i gave verbal praise.