At the bottom of each page are two images that allow you to move through the lesson. These images are and . Clicking on the left-pointing arrows brings you back to the previous page and clicking on the the right-pointing arrows takes you to the next page.

1. Make sure you have completed the contents of each page before advancing to the next one.

2. Some pages contain questions requiring you to think about the information being presented and to apply the concepts of that lesson. You will either have to pick an answer from a list or type an answer. Make sure you have answered all the questions on that page and pressed the submit button. Then advance to the next page by clicking the forward arrows image .

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