A:AnswerYou can't use a mouse with this. It is a touch-screen, so you just use your finger or a stylus. There may be some chance that a Bluetooth mouse might work, but I can't think why you'd want to.
A:AnswerYou have probably jammed use mini-usb into the port wrong side up, and mashed it. If it's under warranty, Samsung might fix it for you. Computer geeks might be able to install a new port, but it might cost you more than buying a new one.
A:AnswerNo it has no flash, anyway I can't find it. I took a picture with it not good quality, but I didn't buy the Tab. E for the camera. good luck, I really enjoy mine.