Hey JagoX, apologies if my response came across harsh as it was never intended to be harsh, i didnt know your industry experience etc, I think that if you are going down the VFX route a good place to start is by listening to the FX guy from bioware on a podcast and his views on creating a strong portfolio;
Episode 16: VFX and UI Games Industry Mentor
then start looking at maya/max particle systems, eventually progressing to looking at other packages like realflow, unfortunately as i said there is no really good tutorials on creating FX unless you are looking at a games company that uses UDK then eat3d is a great place to start.
One thing that i may add though is, if your finding it hard to break into the industry as an environment artist that you will find it even harder as a VFX one, if you look at team sizes for environment artist average per company is maybe 5-20 environment artists and VFX artist range from 1-5 on average so as you may know those positions are not widely available, but get your head down and create a stunning portfolio and you will never be out of work or turned away for an interview
good luck and please post your progress