I'm spending time this week at Nerd Summit 2015. This has been a great experience, covering many different areas. This is fairly heavy on Drupal, but not at all Drupal-specific. At the moment I'm in the Business Panel, which is really very interesting.
Yesterday I gave the same presentation on Panopoly that I gave at DrupalCorn a little while back. I highly recommend this conference, particularly if you are in the New England area. Most of the sessions have been broadcast as Google Hangouts, so you might want to go over to Youtube to see some of them.