New Horizons provides training for both SharePoint end users as well as for IT Pros. See this page for general SharePoint training.
For IT Professionals involved in creating and administering SharePoint Online installations, consider the following training opportunities:
55215 SharePoint Online Power User
This course delivers the complete site owner story from start to finish in an engaging and practical way to ensure you have the confidence to plan and create new sites or manage your existing sites in SharePoint Online.
55238 SharePoint Online for Administrators
The course is appropriate for existing SharePoint on-premises administrators and new administrators to Office 365 who need to understand how to correctly setup SharePoint Online for their company.