Always read to your child throughout the day, every day, which you probably already do, and always run closed captioning whenever your child is watching tv or a video! Our youngest was spontaneously reading just before her third birthday, yet she didn't even start speaking in complex sentences until just a few months prior to reading. She's just turned five and we still run closed captioning (we started using closed captioning upon the recommendation of an audiologist when she was 6 months old)...we know that she is actively reading along with the dialogue because we can mute the sound and she rarely complains, and she can discuss the storyline with us. And with her over excitabilities, she finds movies less scary because she can't hear the sound effects and mood music if she is "reading" the program she is watching.