 So this is an introduction on how to use the MyOpenMath system. So the first thing you should do is to go to www.myopenmath.com. Now, if you haven't already done so, you should go here and register as a new student. Otherwise, you should log in using your username and password. And this will take you to the main page of the MyOpenMath site. You'll see the courses that you're taking over here on the left, any messages that you might have gotten, and any forum post if you're involved in any of the forum discussions. So if we click on one of the courses that we're registered for, oh, I don't know, how about this pre-calculus course? That'll take us to the course page. Now, if you're not taking pre-calculus spring 2019 course number 41986, you probably won't see exactly what you see here, but you'll see some variation of it. So you see here the course is broken down into different units. We have our textbook, we have some prerequisite material, and the units of the course zero through whatever we have. Let's take a look at this Unit 1 algebraic operations. Now, there's quite a bit of material in the course. So one way to keep from being overwhelmed with material is to use this isolate button over on the right-hand side. And what this does is it isolates a unit, so all you're seeing is just that unit. Click on the isolate for this Unit 1 algebraic operations. And that takes us to the material of Unit 1 algebraic operations. And we see that there's a preliminary assessment, there are some lectures, and if we scroll down, we see there are some practice problems, a quiz, and a review of the material. Now, you might notice that all of this material is grayed out, and you can't click on any of it. Nothing happens. And you'll note that there's this little footnote here that says in order to start this unit, you must complete quiz formatting and introduction. And as a general rule, when material is grayed out, it means you have not completed some prerequisite material, and until you complete that prerequisite material, you won't be able to unlock any of the new material.