http://www.funbrain.com/brain/ReadingBrain/ReadingBrain.html

This is a very cool website.  Here you get to read a selection of stories.  If you don't finish a book in one sitting you can come back and at the bottom it has the option to go the the last page you had read.  There are stories for different ages.  After reading the stories there are a couple Mad Libs games you can play.