Microsoft Office 2010 is the previous generation of Microsoft Office and you should consider getting an Office 365 subscription which gives you 5 licenses and 1 TB of OneDrive Cloud Storage space.
Microsoft Office 2010
To Download Office 2010 use the Microsoft Windows and Office .iso Download Tool.
The latest service pack for Office and Visio 2010 is Service Pack 2:
Microsoft Office 2010 Service Pack 2 32 Bit: http://www.microsoft.com/en-us/download/details.aspx?id=39667
Microsoft Office 2010 Service Pack 2 64 Bit: http://www.microsoft.com/en-us/download/details.aspx?id=39647
Note if Office 2010 Service Pack 2 is installed before Microsoft Office Product Activation, you may need to launch an Office Application as an administrator from the program files or program files (x86) folder such as Word otherwise you may come up with an error.
I prefer to use the WSUS Offline Update to patch Office 2010 fully.