Question about flashes

[Ac1dh0u$3.]

Hi there,

I'm wondering if I want to use an off camera flash what sort of thing do I need ? My camera is a Nikon D7000 and I'm wondering if a buy a flash can my camera trigger it without any other device? And without using the on camera flash.

Also what sort of money am I looking at for a one flash setup, can I use a 3rd party flash?

Thank you

 

[Ac1dh0u$3.]

Nice one watched a few videos there, the guy in one says if you set the built in flash to -- in CMD mode it won't affect the exposure, does this mean I won't get the big shadow on the bottom of the frame when using my tokina 11mm -16mm ?