I have 10 clients with Windows 8 Pro edition (planning to upgrade to Windows 8 Enterprise if required)
I have 1 server with 16 GB RAM ; i5 3rd Gen ; 500GB HDD ; Windows server 2012 DC edition.
Now I want to have Excel files over the server , and 10 clients being able to access the server at the same time using u/n and P/w to access using some software or DirectAccess.
All 10 clients can work over same sheet if they want (We can achieve that using Sharepoint 2010)
SharePoint installation guide can be found here http://technet.microsoft.com/en-us/library/ff607866(v=office.14).aspx
Use office web apps for browser compatibility for office documents.
Create a document library with version enabled and put your documents. You are good to go.
But there is no multiple checkout, merge feature in SharePoint.