When you log on to your LearnWorlds school as an admin you will see your Dashboard and all of the available choices under My school:

You can have access to your Course Manager, the Site Settings, your users' profiles, your sales records, analytics, and general settings regarding your school.

In courses, pages, and apps, if you want to see the changes you are making in a Preview Mode (seeing what your students will see) then you can simply click on Preview:

In your Courses' layout pages, you can also preview the course player, by clicking on Preview course player: