My iPad just arrived today. Am charging it up. I understand that should be 4-5 hours. How come I can't get the screen to wake. When you are charging a laptop, you can use it plugged in, even if it had been completely out of battery life. Once the charge is complete, will I be able to tap the screen to "waken" it? Have downloaded latest version of iTunes, awaiting full charge. What next? Thanks for any and all advice for newbies. dmeadows PS: New to iPad but longtime Mac user.