Our family is switching over to T-Mobile, and so I'll be getting an iPhone 4s as part of the plan. Until now, I've had a 'dumb' phone. It was enough for me. Retired, over '70. Being a sort of a minimalist. I'm not often seduced by gadgets. First, I have to learn how to work the thing. I foresee needing voice calling, much less texting, and perhaps since I don't have GPS nav in my car, the voice driving direction feature. Are the Apple Tutorials at their Support Website to instruct me? Is there a brief book on the iPhone? Above the level of 'Dummies Guide to..' but below the level of programming. Thanks.