Share Excel 2013 Workbooks Saved on Your SkyDrive
Click the Share button.
As soon as you click the Share button, Excel e-mails the invitation to share the workbook to each of the recipients entered in the Type Name or E-Mail Addresses text box. The program also adds the e-mail address and the editing status of each recipient (Can Edit or Can View) in the Shared With section at the bottom of the Share screen.
All the people with whom you share a workbook receive an e-mail message containing a hyperlink to the workbook on your SkyDrive.