Apple devices
Setup on an iPhone or iPad, using Apple's bulit in Mail app: https://support.office.com/en-us/article/set-up-email-using-the-ios-mail-app-7e5b180f-bc8f-45cc-8da1-5cefc1e633d1
Setup on an iPhone or iPad using the Microsoft Outlook app: https://support.office.com/en-us/article/set-up-email-in-outlook-for-ios-mobile-app-b2de2161-cc1d-49ef-9ef9-81acd1c8e234
Android devices
Setup on an Android phone or tablet, using the built in GMail app: https://support.office.com/en-us/article/set-up-email-in-android-email-app-71147974-7aca-491b-978a-ab15e360434c
Setup on an Android phone or tablet, using the Microsoft Outlook app: https://support.office.com/en-us/article/set-up-email-in-the-outlook-for-android-app-886db551-8dfa-4fd5-b835-f8e532091872