Google Drive

No, you can simply double-click on a Word, Excel or PowerPoint file, then click on the drop-down arrow along the top of the screen and choose Google Docs to view the file without converting it from MS Office format. 

Yes, press ? or Ctrl / at any time in Google Drive to show the list of keyboard shortcuts on screen. 

Go to the following URL to view documents in your Google Drive in size order, starting with the largest: https://drive.google.com/drive/#quota 

There are a number of ways to select documents in Google Drive:

• To select a single document, click once on the document

• To select multiple documents in a continuous list, click once on the first document, then press and hold Shift while clicking on the last document

• To select multiple documents that are not listed continuously, click once on the first document, then press and hold Ctrl while clicking on each remaining document

• To select all documents in a folder, press Ctrl A

Yes, but these files cannot be converted to Google Docs. You will be able to preview the document in Google Drive by double-clicking on it once it has been uploaded. 

Any presentation can be uploaded into Google Drive.

If you wish to convert a presentation to a Google Slide presentation, it should be .ppt (newer than Office 95), .pptx, .pptm, .pps, .ppsx, .ppsm, .pot, .potx or .potm format. 

Any spreadsheet can be uploaded into Google Drive.

If you wish to convert a spreadsheet to a Google Sheet, it should be .xls (newer than Office 95), .xlsx, .xlsm, .xlt, .xltx, xltm, .ods, .csv, .tsv, .txt or .tab format.

Any document can be uploaded into Google Drive.

If you wish to convert a document to a Google Doc, it should be .doc (newer than Office 95), .docx, .docm, .dot, .dotx, .html, .txt, .rtf or .odt format.

Yes, you can use Google Drive FIle Stream to access your Google Drive files in File Explorer and the applications running on your computer.  Google Drive File Stream allows you to access all of your Google Drive files on demand, directly from your computer.