u have to add an extension to google chrome or firefox called Metamask. once your account is set up u can find your wallet address by clicking the fox head icon around the top right corner of your internet browser, click the 3 dots ... then copy address to clipboard, and then come back here and paste it in brittufs competitions. i think if you go to https://www.cryptokitties.co u can follow the instructons there to get metamask easily. hope this helps!