Hi Stella Dean. Great question. You can find the challenge on your homepage of grokker.com. If you haven't joined it, you will see an option on this page to join. Once you have joined the challenge, you can click on "Go To Challenge" to see your progress and the recommended videos for the challenge. Please remember to claim an "I Did This" after every video you watch to get credit in the challenge for those minutes. Good luck! Let me know if you have any more questions!