My 10 year old son forgot his g-mail account and password. He is locked out of his tablet.

On the gmail log-in page, there is a forgot password link. There will be prompts asking for a secondary email acct, phone number, or something he used for password recovery help.

Problem is, you can't get into anything on your Android even the settings I've done this before. I did a puzzle on my paper and I got the answer. That way is a fun way.