I just finished the Illustrated Man by Ray Bradbury which is stock full of great sci-fi short stories and before that, finished Ender’s Game – SO GOOD!

For short stories, The Store of the Worlds by Robert Sheckley. If you’re looking for another novel, I LOVED The Wind-up Girl by Paolo Bacigalupi

I second dustyhair’s recommendation. Also, look into Ursula Le Guin’s stuff—any of it—and Gene Wolfe.