In addition to the wonderful talks and getting to interact with fellow Chestertonians at the Rochester Chesterton Conference, one of the joys is perusing the books/magazines/etc. for sale. Dale Ahlquist and Joseph Pearce are almost always there hawking their books and materials.
Last year, Dale brought along the Ignatius edition of "Lepanto" that he had edited, and that included explanatory notes and commentary..
The wonderful notes explained references and context, and linked the poem to passages from Chesterton's other works. Brandon Rogers nicely explained the background for the poem, Colonel Melvin Kriesel offered a military analysis of the battle, William Cinfici describe the aftermath, and Dale provided some analysis of the poem.