Good resource for learning civicrm and drupal
There are lots of tutorials available for CiviCRM. Here are some of the links that were useful for me while i was training someone 2-4 years ago.


https://wiki.civicrm.org/confluence/pages/viewpage.action?pageId=38994278
https://docs.civicrm.org/
https://www.youtube.com/watch?v=XxexhDSzSME
https://www.youtube.com/channel/UCbmFxo3HyO9gaNG40byQjiQ
https://www.youtube.com/watch?v=a5bjr0s02NQ -- CiviCRM 101 Webinar
Series for Newbies
https://www.youtube.com/watch?v=ERGOSCIny0c -- CiviCRM 101 Webinar
https://www.youtube.com/playlist?list=PLjSU7YfE0E01HW7JPVAI80XDI0sgOSPDs


You can also look to past CiviCRM conferences. A lot of presenters upload their notes to the session pages or visiting local events if they are held nearby your places.

Similarly you can find lots of videos and documentation on drupal.

If you have good knowledge of PHP, MYSQL, Javascript then try to submit a patch for open issues or feature request. 

HTH

Pradeep