These are some tutorial suggestions to help achieve a conversion from PSD (or HTML) to Drupal:

Videos:
Drupalize.me (only the first two videos are free)
https://drupalize.me/videos/psd-theme-introduction?p=1382

Acquia Webinar (52min)
https://www.youtube.com/watch?v=ITr9hHYPjBA

Articles:
Drupal Watchdog
https://drupalwatchdog.com/volume-1/issue-1/psd-drupal-7-theme