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Basic Site Settings are where you can configure some fundamental pieces of your site such as your site name, email address, default front page, etc.

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D8 - Configuration - System - Basic Site Settings - Navigation

1. Go to Basic Site Settings

Go to Admin Menu > Configuration > System > Basic Site Settings.

D8 - Configuration - System - Basic Site Settings - Overview

2. Basic Site Settings Overview

There are three main tasks you can perform from this screen:

Adjust Site Details, such as the site name.

Change the Front Page settings.

Assign custom Error Pages, such as a 404 Not Found page.

Read on to see how to complete these different tasks.