Learn how to create a new site in Microsoft SharePoint Online, and then restrict access to that site by setting special permissions for its use. This video shows how to stop inheriting permissions, and then set permissions so that only a particular group of people can access the site and its libraries.
Important The services and features that this video shows depend on several factors, such as the Microsoft Office 365 plan purchase agreement, licenses that might be assigned to each user, and specific user permissions. If your experience is different from the experience shown in the video, see your site administrator.
The scenario presented in this video requires Microsoft Office 365 for enterprises or Office 365 for professionals and small businesses. No other product installation or special requirements are required.
The following links provide additional information.
Roadmap: Grant permissions for a site
Fine-tune permissions for content
Create Sites and Pages
Introduction to libraries