Docker up-to-date installation guides are always available on the https://www.docker.com/ website. Head to the Get started with Docker section and pick the installation guide according to your operating system: Windows, Mac OS, or Linux.
As it was already mentioned in the previous chapter, you have two options for installing Docker on Windows, it will be the Docker Toolbox, running on almost all versions of Windows or Docker For Windows, which will run only on Windows 10 or later. Also, even if you are running Windows 10, there are some additional requirements: it must be a 64-bit Windows 10 Pro, Enterprise and Education (1511 November update, Build 10586 or later). With native versions of Docker installation packages (either Docker for Windows or Docker for Mac), you can go with the stable channel, which is fully tested and reliable or the beta channel, and contains some experimental features that the Docker team currently works on, but can be a little unstable and...