Login to your WordPress admin dashboard.

Under the Dashboard menu, hover your mouse on Posts and then click on Categories.

Enter the following details in Add New Category.

Name: Enter your category name such as “Computer”.

Slug: Enter a slug name or leave this as it is.

Parent: Leave this to None or should you select a category, it will become a sub-category of your selected category and the browser will show a URL like “example.com/technology/pc”.

Description: You can leave this as is.

Now click the Add New Category button.