This google Nexus 10 was a gift to me and I don't have to money to ask their support people to help me so I am really hoping that you can help me out. I am very new to android tablets or tablets at all and I was trying to buy an app for a game I wanted and it said that I had to enter my information to buy it so I entered my Mastercard information and then it wouldn't allow me to buy the game anyway. I want to remove the information that I put in about my credit card but can't seem to even find where I put it in. If you know where I can find it and how I can remove it I would be greatly appreciative. Thanks in advance. I read the book and it says that I have the option to remove information that I have entered that I want removed but I can't seem to find the places that it tells me to go and what it tells me to look for or the remove button. Please help me in anyway you can. Very frustrated with it right now and I know that It will get better once I get use to how to use it. Phyllisn64