Another new D7K owner here

Hope to learn more frm u guys~ my 1st Nikon Camera as well
previously using Canon Compact~ Fell in love when D7K came out but at tat point of time i was into underwater photography so i didnt get it~ but hope i'm not too late :bsmilie:
I got mine from IT Show as well looking at the fact it was out of stock for few mths frm last yr end till this yr march and i'm deeply in love now with DSLR... now leftover stocks are few left at the few popular camera shops retailing at 1.9k++
Anyone can help me the long exposure? i tried using bulb but it doesnt run at all ... menu option was enabled...