Google Drive is where you'll want to store school-related files, such as assignments, pictures, and more. On a school Chromebook, access it using its icon on the bottom shelf:

When it opens, you'll see an overview of your recent files. Create new documents, presentations, and more using the + New button in the upper left, or select an existing file to view or edit it:

You can also create folders using the + New button, as shown below. Creating folders for different classes and/or weeks and putting assignments in them will pay off in the long term:

By default, when you download files or take screenshots on a Chromebook, they will go into your Downloads folder:

This folder isn't shared between different computers and may be cleared out from time to time. If you want to keep a file, we recommend clicking Show in folder and dragging the file to Google Drive on the left: