Open Chrome and go to Google Drive (drive.google.com). Make sure you are signed in to your Google account. (Reminder - your school Google Drives are virtually (ha!) bottomless, so you'll probably never run out of room.)
Click on the "New" button in the upper left.
The click on either "File Upload" (if you just wish to upload a file, or a few select files) or "Folder Upload" (if you want to upload an entire folder, or several folders).
Then a Windows Explorer window (the thing that looks like a manila file folder) will open. Navigate to the folder(s) you want, and then click "Open."
QUICK REMINDER: You can choose multiple files by holding the Ctrl key as you click each one with your mouse. If you want to choose a group of files, you can hold the Shift key, click the first file, and while still holding the Shift key, click the last file in the group; all the files in between will now be highlighted / chosen.
