Welcome to the writing & note-keeping tool (called "a wiki") that you can use with your projects & class. It will allow you to keep notes, your comments, your data, etc. on-line. You can also use it to write an entire research paper, inserting graphics, tables, graphs and so on. New to wiki's? Go to GettingStarted for a brief introduction.
There are "simple" ways of using this tool, but as you use it more and more you'll find that there can be quite sophisticated and powerful ways of using this tool as well. But you don't have to use it that way! If you don't have lots of experiences with computers, just use it as a note-taking tool at first....and then learn how to use the more advanced features as you go along.