Blackboard allows you to create internal course links by clicking: control panel, content area (like Assignments), + Course link button at the top of the page. Enter the name and description of your internal course link, then click browse (located under 2).
This will bring up a map of your class. Scroll down to the exact area you want to link to be clicking the plus signs. Click the radio butt to select the area to link to, then submit, and submit. Now, when students click the internal course link in the content area, they will be taken to the linked area of your Blackboard classroom.