You can get vSZ software from any Ruckus reseller. If you are customer with support account, you can download vSZ software from Ruckus support site yourself.
vSZ VM itself comes with 90 days trial license for 5 APs, automatically available, but after 90 days it will not allow any AP connection and you'll need a paid licenses to operate it. If trial period is not enough to play with , you can install new instances and have another 90 days. It is not, of cause, allowed for production use.
Also, fo home lab -- don't install vSZ-E, but vSZ-H. It is same software, same cost, just choice during initial setup, but difference in features is very substantial.
Even if you have a small setup, you'll love vSZ-H manageability. And licenses are still exactly the same...
For vSZ setup and maintenance some knowledge of Linux is highly recommended. And it is a carrier class, complex product with a lot of features and it requires proper infrastructure (such as VmWare server with at least 15 GB RAM available for VM).
If you only need deployment with 10-25 cheap APs, just get ZoneDirector and don't make life complex. You can get ZD1100 cheap now, as it is EOS, but it is still provides everything you need to make everage users happy.
