As the name indicates, the video below is a quick introduction to Human Origins.
The video is one of about 25 that can be found on this web page (about half way down).
Humans and the Great Apes
Some confused people want to claim that according to evolutionary theory Humans evolved from Chimpanzees. This is not the view of scientists. The diagram below shows the general view of the relationship between the human line and the chimpanzee line. About 6 million years ago there lived a creature part of whose population started to evolve in the direction of chimpanzees and another part of whose pouplation began to evolve in the direction of humans. That creature is the Last Common Ancestor (LCA) of Humans and Chimps. The amount of time ago that the creature lived is estimated by the molecular clock. See also this article, which indicates that 6 million years ago is very likely an upper limit to the time of the LCA, which might well be a million years or so closer to the present.
A major problem is that scientists have found few fossils along the branch leading to Chimpanzees. The hominid line leading to us, on the other hand, currently has about 19 species populating it, as shown by the diagram below. (Click on the diagram for an enlargement, in a new window or tab.)
Another way of graphically viewing the hominid fossils is via this interactive timeline, which contains links to articles on the different species.
Links to articles on Hominids