Seeking to learn Drupal as quickly as possible!!!

I know Drupal is one of the most complicated CMS tool out there. I have learned Joomla and WordPress while on the job. Now I need to learn Drupal.

I already have a Skillshare account that has Drupal tutorials. If anyone could recommend the best Drupal tutorials online, either on Skillshare, YouTube or the like I would greatly appreciate it. I really can’t afford at this time.

Thanks for your help.