You can find the Zoom in letter C, the View tab. The view tab is actually very helpful because it allows you to switch your view with ease. You can control the boundaries that you show, the guides, the rulers, and so much more.
You can definitely control the things that you will view so that you will be more comfortable when you are working. You can also fix the view depending on how you would like some of the documents to be printed. The more that you know about it, the easier it will be for you to understand how to use it to your advantage. Are you ready to explore the view tab now?