Help and advice on camera lenses?

Hi so I'm quite new to the world of dslr cameras. I have got to grips with the settings of my nikon d3100 but I want to buy a few lenses for a little treat but there are so many different kinds I'm very confused.
I want to take fisheye pictures, do I do this with a macro or a wide angle lens?
What is the difference between a macro and a wide angle lens or are they the same thing?
And finally what's the difference between this lens:
http://www.amazon.co.uk/...B004QKUISO
And this one:
http://www.amazon.co.uk/...002VSM7LE/
Or are these the same too?
I'm really confused and I sound so silly haha.
Also do you have any other suggestions as to what little accessories I can buy to improve and vary my photos? I've already got a few filters

For fisheye pix, you need a fisheye lens. Neither of the Nikon lenses will autofocus on your camera, but this one will.
http://www.amazon.co.uk/...000GE8MF0/

While they are two different things, sometimes you can get both functions in one lens.BTW, macro is for close ups, wide angle just shows a wider angle than normal.
wide angle:
http://www.nikonusa.com/...5G-ED.html
macro (Nikon calls them micro):
http://www.nikonusa.com/...F2.8G.html

Both of the Neewer lenses are toys. Either is OK if you just want to play. They are essentially the same.

Maybe the next accessory should be a tripod and a camera bag to haul everything around.

I strongly recommend that you take a photography course in order to get the most out of your equipment.

A good wide angle lens is designed to not distort the photo. Macro is designed for very close focus. FishEye is very specific that it is very dome shaped and available in different degrees of vision to see up to horizon to horizon.

Those lenses are total junk that will reduce your image quality to that below a 5yr old mobile phone.

Lenses are more important in any camera system than the camera body.

Don't buy cheap JUNK!
I have Nikkor 18-55mm, 55-200mm, and a 35mm 1.8.

You don't need to buy accessories to "improve and vary" your photos.
Just learn how to use the camera and how to use your imagination.

Macro lens is require for taking the picture of fish eye.Wide lens is for taking the picture of landscape, portrait etc.

the difference are, macro has more zoom and excellent focus where wide lens has less zoom but focus is same i think.

I assume funds are low, that's why your looking at those other off brands and cheap lenses.

Macro = close up, wide angle not possible.
Fish eye = Ultra wide angle, macro not possible.

Good quality macro and fish eye lenses will run you more than your camera cost. Get yourself the inexpensive 18-55mm nikon lens or the 50mm 1.8, and learn how to use your camera. What you are looking at now will degrade image quality and not help you in the long run. Study up on aperture, shutter and ISO.