There are materials available online that can be used to learn about Blackbaud Sphere: (It is recommenced you are logged into your blackbaud.com account)

How to Videos: https://www.blackbaud.com/howto/sphere-videos.aspx
This is a comprehensive list that goes over the features and how to use them in simple step by step videos.

How to Documentation: https://www.blackbaud.com/howto/sphere

Previous and New Features: h
ttps://www.blackbaud.com/howto/sphere-newfeatures.aspx#previous
Look at the release notes for all previous and current releases of Sphere

Sphere Blog: http://www.blackbaudknowhow.com/blog/blackbaud-sphere
Important how-to issues and FAQ answered by our support team

Sphere Idea Bank: http://sphere.uservoice.com/forums/143074-sphere-idea-bank
Have a solution you want to see in Sphere?  Go here to add to the community board for all Sphere users. Add ideas or concepts you would like to see in Sphere or vote on existing suggestions.

Training and Support Page: http://www.kintera.org/site/c.fhLNK4PFLoF/b.3910251/