Blocks
TopicA block is a reusable widget that is placed inside regions (layout containers) of your theme. Blocks can be used by site administrators on the Block layout admin page or provided by a module using the Plugin API.
Contributing to Drupal
TopicAs an open source project, Drupal depends on community contributions in many forms including documentation, code, translation, speaking, organizing events, mentoring others, and even donating money.
The process for keeping Drupal core and contributed modules and themes up to date with the latest security and minor version releases.
In order to run a Drupal site, the web server you are using must meet minimum technical requirements.