New vacuum cleaner you have got a nasty static shock from it how can you avoid this?

Plug it into a properly grounded receptacle if it has a ground prong. Otherwise, if it has only a two-prong plug, it is a design flaw and you will need to remember to discharge it, before you touch it, and yourself, before touching doorknobs after running it. You can carry a key or other piece of metal around with you to do this. I believe I'd take it back to the store and buy a different one.