The benefits learned about with Google Docs apply to Google Sheets.
First read through this link for the most important instructions and information.
To prevent duplicate documents, once you upload the Excel file into your Google Drive, right click on the file and say 'Open with Sheets'
This will automatically convert the Excel file to a Google Sheets file.
Once you have the Orginal Excel file open in Sheets, delete the excel file. This will help avoid confusion.