While "Self Paced", the other courses in the learning path are not gratis unless you are at a university or corporate entity that has purcased them as part of their license; in which case they can tell you and you can link to the license. If you have a single-user license whether Student or Home, you'll have to purchase the additional courses.
See <Does my license cover the MATLAB Fundamentals or Simulink Fundamentals courses?>. BTW, the unlimited access but one year time frame subscription starts at about $600 for Student version
