Exam 70-346 -Managing Office 365 Identities and Requirements

For your study guide, focus on these topics which can be found on the link provided by Nuno: Managing Cloud Identities, Planning and Implementing Networking and Security in Office 365, Implementing and Managing Identities by Using Azure AD Connect, Implementing and Managing Federated Identities for Single Sign On (SSO), Monitoring and Troubleshooting Office 365 Availability and Usage, and lastly Provisioning of Office 365.

Also, create at least a Trial Office 365 tenant so that you will be familiar on it. Good luck!