Sometimes a student may need guidance as they are progressing through their course.  As an observer, you can see exactly what the student sees with the exception of being able to submit assignments (of course!).  If you think there are more courses you should be able to see, you may need to customize your course list.

From your Dashboard, click on the course tile of the course you wish to take a closer look at:

Just like a student, you can browse through the course.  'Modules' is where you will find the lessons and assessments that students work through.  However, the home page is a great place to find the teacher's preferred contact information and method.