Awesome Screenshot is a useful tool for taking screenshots of web pages in your browser. If you are having trouble on your computer and are unable to explain exactly what it is doing, you can always take a picture of the problem to show your instructor.
If you are using the Chrome browser, navigate to https://chrome.google.com/webstore/category/extensions
In the search field at the top of the sidebar on the left, type: Awesome Screenshot
A list of results will appear. Simply click the "ADD TO CHROME" button and it will be installed in your browser.
After it is successfully installed in your browser, you will see a new icon appear in your browser's toolbar at the top right of the window. Left clicking this icon will bring up a dropdown menu with several different options for capturing the page.
After choosing what you want to capture, you can annotate your image with arrows, lines, boxes, text and more.
Click the "Done" button when you're finished adding annotation.
Finally you can choose to save the image as a file, copy to clipboard, Print, or save online.
You can follow the same instructions for Firefox, by navigating to https://addons.mozilla.org and searching for Awesome Screenshot and clicking "Add to Firefox".