That plugin, is a monster synth sound making tool.
You can also check out Synth 1 vst, which is a free vst, for making cool Synth sounds.
Here's the link to it:
http://www.geocities.jp/daichi1969/softsynth/#down
That takes alot of practice, trial and error. But it's not as hard, as people think it is.
We have some Synth sound making tuts, in the Tutorials section, on this forum.
And there are some Synth sound tuts, on Youtube as well.
Feel free to check them out, whenever you have time.
Also, hello and welcome to the forums thazklein.