Here is where I'd like to lay out some basic guidelines (for all school Levels) that will help you to not only finish the course successfully, but so you will have the best opportunity to study the materials thoroughly in order to receive the most out of the school. I encourage you to refer back to it, here online often, especially if there may be any minor changes.
I recommend generally reading through this entire page first. But then use it as a reference guide. The best way to not be overwhelmed is to go to your semester page (Moodle for Level I), look only at the week that is due. Then, if you are not sure about how to do something on that page, come back to this page for reference and a refresher. By doing it a little bit at a time, you'll get through much more easily.