In a previous post I explained that I am outlining the New Testament. I begin by typing out the heading in each chapter and then I condense this to make my own outline. I have uploaded the ESV headings in PDF form here and on my resource download page.
Here listed are the ESV outlines for all 27 NT books. These are not my own work (save for two, see below) but are simply the ESV section headings. These can be useful in their own right or be used to help construct your own outlines.