There are a number of avenues where you can get help with Blackboard;

This is a blackboard site that shows all sorts of tutorials and guides and also has an extensive amount of resources:

https://help.blackboard.com/Web_Community_Manager 

https://cerc.blackboard.com/training

There is also the "How Do I ..." tab in your site manager.  This is context-specific help that is searchable.  You can also find comprehensive documentation in their "Guides".