Files | Beginner
Explore the Files list
Click Files 
to see all your important files, which are sorted into the following categories:
The Recent view shows you every Office 365 document you’ve viewed or edited in recent history.
Note: Another way to view your recent files is to type /files into the command box at the top of Teams.
The Microsoft Teams view shows you all the documents that have been created or edited recently within your favorite channels.
In the Downloads view, you'll see a list of all the files you've downloaded to Teams.
The Cloud storage section shows all the different cloud storage services you've connected to Teams. Click one to see your cloud files.
Edit a file
To make changes to Office files, open them in their respective Office or Office Online apps. From the Files app, select More options 
next to the file name and select the app.
From an opened file in Teams, select [the chevron image] next to Edit.
Other file types can't be edited once you upload them to Teams. You need to update your local copy, then upload it again.
Download a file
You can download any file you see in Teams—whether it’s in a channel’s Files tab, sent in a message, or stored in a OneDrive folder. Click More options 
next to a file name to see the options for downloading it, opening it, or getting a link to it.
Clicking Files 
on the left side of the app lets you see recently accessed files, a list of your files in Teams, OneDrive and other cloud storage files you’ve added to Teams, and your download history.
Share a file
To send a file in a one-on-one or group chat, click Choose file 
beneath the compose box, select the file you want to share, and then send. You can also upload a file by going to the Files tab and clicking Share. You can select a file from your computer or OneDrive for Business account.
To share a file with your team in a channel, click Choose file 
beneath the compose box or go to the Files tab and click Upload.
Once you share a file, you can also share a link to it. That way, you don't ever have to upload multiple copies of the same file to share it in different places.
Get a link to a file
You can grab a link to a previously uploaded file without leaving the channel you're chatting in. Just click Choose file 
beneath your compose box, then select Browse Teams and Channels. Go to the file you want, and then click Share a link. Teams posts your link in the channel conversation, including the name of the team and channel where the file is stored.
Alternatively, you can go to the file's location in Teams, click More options 
next to the file name, and then select Get link. You can now paste the link into any channel or chat.
Don't forget that you can share links to files in other channels (even if they belong to different teams). That way, you never have to upload multiple copies of the same file to work with it in different places.
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