I noticed several articles that are part of a series, with a list of the other articles in the series. They are used for work-in-progress articles. I couldn't find any how-to info in the tutorials. Can someone point me in the right direction to learn how to do articles in a series? Cheers

@gblair: At the very bottom of a post, you'll see this "plus" sign - click on it:

It then opens a dialogue box where can select with what post you want to make this a series: