Google Drive allows online (and offline) access to a suite of tools similar to Microsoft Office. Docs, Spreadsheets, Drawing and more are available at Google Drive. Items can be created using the Google interface and files can be uploaded to Google Drive.
On Monday we got to experience one of the odd things about Google Docs. The schedule for the EdCamp was created in Excel. The file was uploaded and is accessible as a preview, more like a photo. By uploading as a .xlsx file it is limited to preview and download. Making for a great way to store files to go between multiple locations or serve as a backup. For the file to be editable by the author and shared contacts the file needed to be converted to the Google Spreadsheet format. The file can be opened for editing within Google Drive and a copy of it is created. Please be sure the correct format of the document is then shared for editing and viewing.
The image below shows the icons for a Google Doc and Microsoft Word when stored in Google Drive. Note the file names are the same.