Open Google Docs/Sheets, etc. without owner knowing you’ve done so.
If you want to open a shared Google Drive file without the owner seeing that you’re in the doc, you can just make a copy of it rather than opening the actual doc. To do this, copy the link of the shared file, paste it into your browser’s address bar, and change the “/edit?…” part at the end to “/copy”.
Google will prompt you with a blue “Make a Copy” button. Click it, and you’ve got your own copy of the file that you can peruse without the owner knowing you’ve accessed it.