If you want to install your own, and you have a pc or server with at least 32(64 is better) gb of ram and a quad core(eight core is better) processer, look at vmug advantage. For 200/year you get licenses for most VMware products, along with horizon. It also includes VMware workstation, so you can install a nested esxi lab that you can test installing everything. Its what I did to get experience with installing and managing horizon.
