What you need for this book
You can download a trial version of the NetScaler virtual appliance from Citrix at https://secureportal.citrix.com/MyCitrix/login/EvalLand.aspx?downloadid=1857216&LandingFrom=1005.
You should also have a virtual environment running either VMware, Citrix XenServer, or Hyper-V. If you do not have a virtual environment, you can test it out on a client hypervisor.
For instance, if you are using Windows 8.1/10, you can use Client Hyper-V, which is an add-on that needs to be added from Programs and Features under Control Panel.
You can also use the VMware player, which is available at https://my.vmware.com/web/vmware/free#desktop_end_user_computing/vmware_player/6_0.