This is a part 2 of the getting Powershell upgraded from v2 to v5.1, and PowerShellGet and PowerCLI installed and running on a Windows 7 Pro/Ent workstation. The latest PowerShellGet version as of today, January 2018, in the PSGallery is v1.6.0. It needs to be downloaded to local repository first before installing it.
PS C:\> mkdir PSRepo
PS C:\> Save-Module -Name PowershellGet -Path C:\PSRepo