If you are stuck on a challenge question, please click on the notes icon on the top right corner and go through the precursory information to see if you have missed any concepts.  If you are in the hands-on section of a lab, make sure you have not missed any steps in the lab instructions.  If you are still struggling, please send an email to support@kubecampus.io to clarify any doubts about the concepts.  You can also use the skip function to move forward with the labs.