There may be several parts to the program you have enrolled in, and to make it clear what is included in the Diploma, Advanced Certificate or Pathway there is a summary page that shows all the components of the program.
On the Dashboard, you will see this Summary Page and also the first component of the program you need to complete. Only one component of the program is released at a time and once you have completed the first course, the second course will be released, and so forth.