Back in the older versions of Windows, there used to be a handy feature called Windows Easy Transfer that painlessly guided the process of migrating files and settings from one computer to another.
The sysadmin's guide to repurposing an RJ45 port ...
Microsoft wants you to use the cloud, but there are a lot of good options — including trusty old network file sharing and a little-known modern Windows feature. Remember the HomeGroup on Windows 7?