Microsoft has made several interactive guides to help IT Pros, Organizations, Dev and other IT people to learn more about Office 365.

Exchange Cutover Migration with Office 365 (2-Part Series)

Preparing the On-Premises Exchange Environment for Migration

Performing an Exchange Cutover Migration

Source – https://techcommunity.microsoft.com/t5/Online-Interactive-Guides/Updated-Online-Interactive-Guides/m-p/28352#M1