How do I upload document to Google Drive?

You can upload files into private or shared folders. On your computer, go to drive.google.com. At the top left, click New File Upload. Choose the file you want to upload. On your computer, go to drive.google.com. Open or create a folder. To upload files and folders, drag them into the Google Drive folder.
For More Information Please Refer:
https://support.google.com/drive/answer/2424368?co=GENIE.Platform%3DDesktop&hl=en
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