ok, i have a couple concerns. i just got my tablet today, although it is sharp looking, i am having some issues with it. 1-no sound although speakers are turned on. 2-when i do a google search, i can type in english but all words are in chinese. 3-i was under the impression that you could charge batteries with the usb??? is it only the power cord. i got instructions with it, but they are vary vague. please help!