do I open the Atlassian Jira lab instance.
I have begun the Jira Basics (free) server training. Completed the first session and it wants me to go to my instance of Jira and explore the headers. I have no link, and help page does not send me.
are you talking about the Learn Jira Basics (Server) course? As said in the training you're supposed to go to your instance ("Take some time to apply what you've learned in your own Jira. Open your instance of Jira and explore the header to..."). There is no lab environment provided (like in other paid Atlassian training courses). Best, Max