I have just started using it but it is really engaging and you can make nice presentations or just tell stories by using images, writing texts, uploading videos or audio recordings. You can have forums, quizzes and it is easy to share the final product you have created.
Here are some tutorials which can help you work on it for the first time, but you will not have many difficulties if you have already used Tackk or Padlet for boards and presentations.
Here you can find a nice example online : you will see that it is well-organized and it presents great potentialities for educators and students!