hi guys and gals, i just was given one of these and i love it, but it has all the settings and stuff from the previous owner. i cant log into the marketplace, and i dont know where to change this because i have no instructions. it came with just a charger and the tablet. how do i get rid of all the stuff the previous owner had on here and just start over fresh? or if there is something better i can do, let me know what it is. there is nothing on this tablet i need to keep, so im fine just doing a wipe. thanks!