Set up Office for iOS
Tap any Office app like Word to launch it.
Sign in with your Microsoft Account or Office 365 work or school account and tap Next.
Note: If you don’t have a Microsoft Account, you can create one for free using any email address you already have.
If you sign in with a Microsoft account that’s associated with Office 2016 or Office 2019, you may get the option to upgrade to Office 365. Follow the instructions to purchase a plan, or select May be later if you want to use the apps without a subscription.
Note that you get extra features if you use an Office 365 subscription.
Tap Yes or No to help us improve your Office mobile experience.
Tap Turn on Notifications to enable alerts or Not Now to opt out.
Tap Create and Edit to start working on your documents.
Tip: After you sign in, your account is automatically added to the other Office apps installed on your iOS device.
To add another account or cloud service, like OneDrive or Dropbox, tap Open > Add a Place.
If you’re using OneNote, tap Settings > Accounts.
Choose the cloud service that you want to add.
Enter the email address and password that you use to sign into that service.
More info : Office.com/setup
