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

This Exchange guides will help you to migrate between Exchange versions and how to be prepared to Office 365.

Exchange Guides

Creating an Exchange Certificate Request

Migrating Legacy Public Folders to Exchange Server 2013

Using the Exchange Administration Center

Migrating from Exchange Server 2007 to Exchange Server 2013 (4-Part Series)

Migrating from Exchange Server 2007 to Exchange Server 2013 – Part 1

Migrating from Exchange Server 2007 to Exchange Server 2013 – Part 2

Migrating from Exchange Server 2007 to Exchange Server 2013 – Part 3

Migrating from Exchange Server 2007 to Exchange Server 2013 – Part 4

Deploying and Managing Exchange Mailbox High Availability (3-Part Series)

Creating a Database Availability Group

Testing Database Availability Group Switchover and Failover

Testing Client Access Load Balancing

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