A nodequeue is a list of nodes that can be used, for example, in a teaser display.
Creating a new nodequeue
Go to Site admin > Configure Chemistry Nodequeue views.
Then click Add a new nodequeue, which will take you to the form shown below:
Enter a title of your choice. You will not normally need to edit any of the other settings on the "Add simple queue" page, so scroll to the end and click Submit. You will then be shown a list of all the nodequeues on the site.
You will next need to add some nodes to the nodequeue (instructions available here).