GrantStation is a partner featured in the 'Resources' area of GrantHub. GrantStation offers online access to a comprehensive set of powerful grantseeking tools and resources, which makes it quick and easy for nonprofit organizations to identify the appropriate grantmaker for any given program or project.
Here is a page with a few video tutorials for GrantStation: https://grantstation.com/public/tour.asp
If you want a deep dive, watch the 60 minute Tour of GrantStation.