What are some good books I can read over the summer?

Once I'm reading a book that I love I can't stop;I thirst for more! I love books such as The Chronicles of Narnia, The Harry Potter Collection, and the Twilight Saga. I guess I'm more of the fantasy, romance, fiction reader. So therefore, it would be great if someone can list a few good COLLECTIONS of book that are similar to the ones i listed above. And it would be great if it is a series or a collection also like the ones listed above..thank you.