Finding your way around how you navigate around a Moodle site will depend on the administrator's settings, your theme and how up-to-date your version of Moodle is.
Dashboard. Everyone in Moodle has their own personal page called their dashboard.
What is a course? A course in Moodle is basically a space on the Moodle site where one or more teachers can add learning resources and activities for their students.
How to layout a course. As a teacher you have a lot of control over how your course appears to your students.
Editing course sections.
What are the edit icons?
Adding and editing text.
What are blocks?
Dragging and dropping files into Moodle.