How can I download MS Excel 2013 onto my iMac?

I'm a college student taking a MS Excel 2013 Specialist class. I tried to download Excel 2013 from the MS 365 subscription that was provided with my workbook, but I have learned that I cannot download it onto my iMac. For some reason it's not available for a Mac??? Is there a workaround for this? I was told by a Microsoft technician that if I had a Windows License I could then "boot the computer to bootcamp to use the Windows environment ." Is that possible? If so, will it hurt or be detrimental in any way to my iMac?