An index for Arrow Season 1 (specifically relating to the complete season collections and home media exclusives) typically categorizes content into the episodic journey of Oliver Queen and the behind-the-scenes "exclusive" material. I. Episode Index (23 One-Hour Episodes)
If you are looking for an "index" of the show's first season, here is the essential breakdown: Arrow: Season 1 (Blu-ray + DVD + UltraViolet) - Amazon.com index of arrow s1 exclusive