NZ avalanche specialist and educator Gordie Smith put this great course together. It brings together many of his photos, online videos, and text that walks you through the basics of traveling in avalanche terrain, covering (quickly) all the topics that you'd encounter in an avalanche class. It includes an interactive game where you can try and find your way safely through avalanche terrain, avoiding the hotpsots where avalanches might be lurking. This resource gives students the chance to prepare, giving them a framework of theory to hang the field skills they will practice during any snow based course.
A self marking test at the end of this course helps to check your understanding. Give it a go as many times as you need to get all the answers correct.