How to Work with Excel Web App Workbooks - dummies

After you have finished developing your spreadsheet, you can save it, which will automatically save it to the document library in which you created it. You can then click on the document to view it and then edit it further by using either the Excel Web App or the local Excel application running on your computer.

There are times when you do not need to edit a document. For example, you might want to just view the latest spreadsheet report or show a colleague a set of data. The Excel Web App contains two different modes. When you are editing the document you are using Editing Mode.

When you want to read the document, you can simply click it in SharePoint to open it and view it. This reading view is called Reading Mode, which looks very similar to a document that is printed on paper.