SharePoint Introduction - Reference Sites

The following are good SharePoint related introduction sites for reference:

Introduction to SharePoint and OneDrive in Microsoft 365 for Administrators:

https://learn.microsoft.com/en-us/sharepoint/introduction

About the SharePoint Administrator Role in Microsoft 365:

https://learn.microsoft.com/en-us/sharepoint/sharepoint-admin-role

Get Started With SharePoint:

https://support.microsoft.com/en-us/office/get-started-with-sharepoint-909ec2f0-05c8-4e92-8ad3-3f8b0b6cf261

Introduction to SharePoint Information Architecture:

https://learn.microsoft.com/en-us/sharepoint/information-architecture-modern-experience

Introduction to the SharePoint Success Site:

https://learn.microsoft.com/en-us/sharepoint/overview-sss