It may sound obvious, but sometimes the best way to find something is to start looking. Google Drive lets you quickly preview more than 30 file types and quickly flip between files until you find the one you want.
To see a preview of a Google document, right-click on the file name and select “preview.” Once the preview window is open, you can click on the arrows on either side to flip to other files. And right from within the preview, you can watch video files or scroll through multi-page documents.
You can select and copy text from the preview — even for a PDF or Microsoft Word document — or use the zoom buttons to see a file in more detail. Each file preview also gives you one-click access to share, download, print or open a file for editing.
Via: google drive blog