^^ Harry, I don't use/trust the 'cloud' for anything ... but, then again, I don't even have/trust FaceBook.
VN, my Yoga 2 Tablet has a mini HMDI port, but no usb port.
Yep, all use Wi-Fi and yeh, you can use your phone as a mini/personal-hot spot.
We used to, in the car, one of the family with a good battery created a personal hot-spot and we all fed off it.