The Exchange Online Standard Developer Guide is now available for download here:  

Some of the main topics covered (and tested) include:

1.      Exchange Web Services

·        List of exchange web services supported in an Exchange Online Environment

·        Using Auto Generated Proxy

·        How to write an EWS client application

2.      Auto Discover Service

·        Lookup logic

·        Sample application

3.      Integration of Exchange Online with Azure (two sample apps: Free/Busy and Delegate access)

·        Create an online project

·        Creating a Web Cloud Service

·        Deploy Web Cloud Services on Azure

4.      Integration of Exchange Online with Microsoft Dynamics AX

·        Creating wrapper classes, adding references and invoking the wrapper classes

5.      Using EWS via Java client

6.      Code examples as appropriate.