What CMS should the front-end understand?

Question

CMS

Interested in a gentleman's set of CMS, in which the front-end should understand, as well as the depth of the necessary knowledge in them.

Answer 1

If you want to be able to quickly make home pages for a small business, then Joomla / Drupal / Wordpress will cover 90% of all requirements.
If you want to do something more seriously, then forget about the deep study of CMS, there is no depth there. Learn frameworks.