Printing

I cannot print doc files please help.

You are right doc files will not print, but you can still print you files.  You have to open your drive app (not through the browser) and hold your finger on the document you want to print.  A menu will pop up after 5 seconds or so.  Select "Send" and select the cloud print icon.  If you have cloud print setup correctly all you have to do is click on print the document.

The reason for this is cloud print will only print PDF files, but if your settings were set before hand it will print with the correct margins, header,...