Drupal 7: what I already know
- site administration skills at quite a decent level
- some knowledge of custom theming
Drupal 7: further learning plans
If I ever work with Drupal again and from scratch, I may consider taking version 8 to take a look at its BEM implementation and learn twig templating engine.
I might also learn how to develop modules for Drupal if I need it in one of my future projects.