Keeping it simple
$ bash -c "`curl -sL https://get.freshshell.com`"
Fresh should now be good to go.
$ curl https://nixos.org/nix/install | sh
You can now install all the things I find useful.
$ nix-env -i all
Set the color scheme.
$ base16_tomorrow
$ tmux
Type <C-a> I (that's Control + a then I) to install plugins.
Install all the plugins.
$ vim +'PlugInstall | qa'