On every page in shuspace there is a link inviting students to get help with shuspace.
Support resources available for students
A summary of the help and support information available to students when using Blackboard and other e-learning tools.
There is a screencast available that you can link to from your Blackboard site that explains the process of submitting assignments online through Blackboard to students.
There are customisable sets of instructions available that can be tailored to your needs.