Log into Drupal as an admin and navigate to Structure then Content types. Click Add content type, give it a name and description, then save.
Once the content type exists, you add fields to capture the data you need. Fields can include text, numbers, dates, images, references to other content, and much more. Each field has settings for things like cardinality, default values, and display formatting.
After fields are added, configure how the content type appears in forms and on the page through Manage form display and Manage display. Content types are the backbone of Drupal’s structured content approach. Spending time getting them right pays off throughout the life of the site.