When you log into your Google Drive you will see this menu on the left. On the right, you will see "Quick access", which are recent docs/ slides/ forms/ etc. you have recently viewed, worked on, or have been shared with you. Below that, you will see folders.
Now you have an empty folder. Next, you will create folders for each of your courses within this folder. Follow the steps above and title each folder with the Course name or number, such as "Course 2" or "Science"
1.) Open the document (or you can right-click it to show the menu options)
2.) Click "File" and select "Move"
3.) Choose where you want to move it. If you want it to get out of the current folder, use the left arrow in the box next to the existing folder name. If you want to put it in a folder within the existing folder, click the arrow to the right of the destination folder.
4. Click the blue "Move here" button.
Quick tip:
Another way you can move folders and docs is by simply dragging and dropping items where you want them to be!
A shortcut doesn't make a copy or move a doc/ folder. Instead, it allows you to access the doc/ folder from multiple locations in your Drive!
Use shortcut instead of move when you don't want to remove a doc from, let's say, a shared folder.
Use a shortcut when you are not able to move folders (like a Google Classroom folder). Creating a shortcut allows you to organize your Drive the way you want without moving it from its original location.
Use a shortcut with a document is shared with you. Go to "shared with me", follow the steps, and file the shared doc where you want it.