Before we can begin working with blocks, we need to be familiar with Block layout and Regions. We need to know where things are located, what blocks Drupal 8 provides us with, and the concept of Regions.
We can navigate to the Block layout page by directly entering /admin/structure/block, or by using the Admin toolbar and clicking on Structure | Block layout:
The Block layout page provides the interface that allows us to manage block content by placing blocks into regions. Blocks can be categorized based on their functionality, with the most common types including the following:
- Core: Blocks contained within the core installation consisting of items such as page title, primary admin actions, and tabs
- System: Blocks that provide system functionality consisting of breadcrumbs, main-page content, messages, site branding, and a few others
- Forms: Blocks that...
