do nicotine free electronic cigarettes have anything bad for a 12 year old?!

The ones I have use a cartridge that contains fluid that connects to a battery that makes the cartridge produce fumes. The ones I have contain nicotine which is a toxin, but not supposed to be as bad as the burning tobacco leaves because the oxidation produces more toxins. It's also been said that the cigarette companies put other additives into their products to make them more addictive.
If you are 12, I would suggest trying some really strong mints instead. If you're already hooked on cigarettes, then the electronic ones would do less damage, still provide that hand to mouth stimulation, and might be a way to wean yourself off the traditional cigs. The electronic ones take a little getting used to. Do you want to appear to be smoking because you hang out with them? I started because it was the only way to get out of the barracks in the Air Force Basic Training - I know now that tobacco is worse than a heroin addiction.

I'm a smoker of 30 years +. I know from my research that smoke contains over 500 different poisons. I also had a problem with the social stigma being around non-smokers. Have tried to quit several times even using hypnosis. I just got my E-cigs a couple of months ago.

Absolutely. Inhaling anything unnecessary into your lungs is potentially dangerous. Then there is the hazard of developing a smoking habit of any kind, hanging out with people who have the habit and probably access to tobacco and more, and the added risk of looking like a complete idiot.