Getting FOG Project
The latest release of FOG Project is v1.5.5, released November 16th 2018.

At this time, a FOG server installation is only supported on a computer running Linux. We recommend using a Long Term Support distribution meant for servers, such as CentOS or Debian, though you can use a variety of other distributions. We also recommend installing FOG Project inside a virtual machine, to aide in easy backups and upgrades.

You can download a pre-packaged tarball of the latest release of FOG Project, v1.5.5, from here.
Please verify that your download matches one of the following checksums:
md5:  22a428e5ad3df5578a1d4d8d58ee61f5         fogproject-1.5.5.tar.gz
sha1: d8cafb634d195d643c5d90966529258c64ec8a0e fogproject-1.5.5.tar.gz
To install FOG Project, an internet connection is required. During installation, it will download other binaries and install any needed dependencies. More detailed guides can be found in the wiki, however, installation is as simple as extracting the tarball and running the install script:
tar -xzvf fogproject-1.5.5.tar.gz
cd fogproject-1.5.5/bin
sudo ./
Next Steps
Once installed, check out the wiki for more information and guides. If you need help head over to the forums.