Is anyone familar with this product?
Is this product useful for studying Cisco?
I've never heard of it...it looks interesting but may require you to be familiar with a good bit of configuration in multiple technologies to make it work. For example, it looks like the Cisco IOS emulation is based around GNS3 (non-gui) but using the Cisco IOU is another technology.
I'll try and read up a little more on this later. best I can do for now! :)