hi mate,
I'm affraid that there is not much activity in this forum anymore.
The best suggestion I can give you, is to learn substractive synthesis. It's not so complicated but has a considerably longer learn curve than you must expect. The best course I can suggest you is a 4 DVD course from Rob Papen called ELEMENTS. There you have a very complete starting to know synthesis, after that, the best that you can do is to read the manual of the Virus, with this 2 things you will have a fair control of the synth and almost any other synth. I guess there is no complete video of the basic functions of the virus since all that is in the manual.
Hope that helps
best