Check the specifications of the front of the lens. Usually the lens will indicate the thread size of the front lens, which is the number after the ø symbol. 

Not necessarily, but in most cases, using a lens hood can improve the quality of your photos, especially when shooting in bright light conditions. 

According to the K&F concept homepage, the surface treatment for this adapter is "anodized" and that means anodized. Anodised layers are used to improve the appearance and functionality of the surfaces of aluminum materials; With the adapter, the aspect of wear resistance (contact surface to the camera) should play an important role (a black lacquered connection surface would probably start to "dissolve" after a few adaptation processes). 

Dear Customer, so sorry to tell you that this adapter won't allow your nikon 1 s1 lenses to mount to my canon t2i. 

I would think that it would be no problem, as long as it has a 1/4-20 threaded mount on the camera. I might suggest looking for a video tripod, though, over one designed primarily for stills cameras. A video tripod will give you smoother control over panning and tilting maneuvers.