A full list of reccomended clients are:
Outlook for windows: https://apps.microsoft.com/store/detail/outlook-for-windows/9NRX63209R7B
Outlook for Iphone: https://apps.apple.com/us/app/microsoft-outlook/id951937596?platform=iphone
Outlook for Ipad: https://apps.apple.com/us/app/microsoft-outlook/id951937596?platform=ipad
Outlook for Android: https://play.google.com/store/apps/details?id=com.microsoft.office.outlook&hl=en_GB&gl=US
Outlook Web Access (Via a browser) https://outlook.office.com/mail/
Outlook for mac: https://apps.apple.com/us/app/microsoft-outlook/id985367838?mt=12
Alternatively using a version of Outlook 365 which you have purchased from Microsoft.
To get started, simply download the software for your device above and when asked for your login details, use the email and password provided in the original email. Although we recommend Outlook for Mac we are unable to provide support for it.
How to install Outlook and Office apps on iOS devices - https://www.youtube.com/watch?v=-fJ6oOJqDTg
How to install Outlook and Office apps on Android devices - https://www.youtube.com/watch?v=Kv7p3lWqP9M
How to log into your account on Outlook for Windows devices - https://youtu.be/jgJV_GDHhH4?t=46