Office 2013 or Office 365 to access Client’s SharePoint?

Hi:

I am external consultant for my client and need to access their Sharepoint. They have given me all permissions and I have access but am limited to what I can do. I use a MacBook and have Home Office 2010 installed. Do I need to get Office 2013 or Office 365 to fully utilize my Client’s Sharepoint files?

Thank you for your help.