You can learn how Moodle looks and works by accessing our Moodle Demo.
Our mock school demo provides entry points to different roles and experiences in Moodle but you can also experiment with an empty site. Both those sites reset on the hour so anyone can do anything they like there.
*In the article How to create a Moodle site you will learn how you can get Moodle. *If you are interested in MoodleCloud, you can test it out with a 45-day free trial.