Microsoft Teams is considered to be the "hub for teamwork" in Office 365. You can chat, call, and meet with members in your team, as well as share files and collaborate together.
General
Creating a Team
Download the Client
Downloading the Microsoft Teams Client
Managing Your Team
How do I add people to a channel?
Can I restore a deleted channel?
Can I recover deleted files in Teams?
Will only channel members receive the email or will this go to the entire team?
Is there a “Team Owner”? Can this responsibility be shared by Co-Project Managers?
Can team owners define permissions within the Team space for various permission levels?
Is sharing available by folder or all documents on the SharePoint Team site?