purple motes is deliberately not organized with eye candy to attract your attention to different articles. You are encouraged to engage actively and steer your own course.
Click on purple motes at the top left column to see articles in reverse chronological order. The alphabetic topic index and the search box in the left column are alternate starting points. Just start reading something and see if it stimulates your fancy. If not, keep reading until you find within the text a link that provokes your imagination. Click on it and off you go.
For scholarly reading, open another copy of an article in another window and scroll down to the footnotes. Then you can easily move between text and footnotes by hopping between windows. You can similarly open within-text links in another window and go to them when you finish the article you’re currently reading.