Can the nikon d3100 camera take videos if so how?

Can the nikon d3100 camera take videos if so how?

It can and all you have to do is refer to the instructions found in the user manual.

Page 46, 126 and 139

Actually shooting video will require you to have a shooting script and some kind of powerful computer used to edit large files, such as those produced by any video camera

Yes, but you can only take a 10 minute video. There's a circular button above the LV wording (outside of the red circle on the camera). Pull the circular button down and then when ready to record, hit the red button, you'll see it recording. Hope that helps.

Yes it can, and very nice videos, as well.

As for the "how" part, I'll give credit to a complete answer given here to an earlier question.