My website has been transformed from Drupal 6 to Drupal 8! I'm cautiously happy with the site's new incarnation. Thanks to my husband J-P Stacey for carrying out the upgrade. He's put in a lot of work on documentation for Drupal 8, writing a series of blogposts about the Drupal 8 APIs which have already proved useful to many people. Those blogposts are all available on his website: www.jpstacey.info
If you want to hear J-P talking about his work on Drupal 8, you can watch this interview from Drupalcamp London.