[Closed] camera numpty questions re Nikon D40 and lenses

hello have a Nikon d40 and really did not use it till recently but using it more and more so will this lenses fit the body? Is it a good lenses?

[i]The Nikon ED AF-S DX NIKKOR 55-200 mm f/4-5.6G Telephoto Zoom Lens is a high-powered standard DX zoom lens with enhanced telephoto capabilities and a Silent Wave Motor (SWM) for use with the Nikon DX format digital SLR cameras.

Capture stunning photos from a distance

The 55-200mm zoom range is equivalent to an 82.5-300mm lens in 35mm format and it offers maximum versatility[/i].

and where is a plain English simple place to find out what the camera does in manual setting?

Thanks