If you download Skype for Windows, you have to download a small 1.8 MB installer. When you run the installer, it’ll attempt to connect to the internet to download the real Skype setup file. This is a pain in the neck if you’re going to install Skype in multiple computers, because you have to download the full setup file again every time.
A good choice would be to keep a standalone, offline installer for Skype that doesn’t require an internet connection to setup Skype on your computer that will install Skype on your PC in a matter of seconds (without connecting to the internet, of course).
You can download the standalone version of the Skype installer that works offline by clicking on this link.