Imagine Science: Black Holes
A service of the High-Energy Astrophysics Learning Center. A nice introduction to black holes. Intended for ages 14 and up.

Falling into a Black Hole
This is a website that describes the geometry of a black hole and what would happen if one were to fall into one.

Relativity Tutorial
an illustrated introductory guide to relativity

skinny monkey takes a look at black holes
a brief overview of black holes - the maths that allows and describes them, their formation, and their weird properties.

Black Holes to Blackboards-God Divided by Zero
Laying your hands on a black hole is hard (and dangerous) to do, but there are ways to understand these objects and avoid the pain of dimension-bending.

Black Holes: General Information
Learn about the amazing phenomenon that is a black hole.

Virtual Trips to Black Holes and Neutron Stars
Here you will find descriptions and MPEG movies that take you on trips to black holes and neutron stars. These movies are scientifically accurate computer animations using Einstein's General Theory of Relativity.

Black Holes
A one hour lecture given to senior liberal arts students on the concepts surrounding black holes

Black Holes
Basic ideas and descriptions of what black holes are and if white holes exist.

Project 2000: Black Holes
Pictures, diagrams, and explanations of black holes in an easy to understand format. Good site for someone doing research on black holes for a report or project.

Big Bang
A book outlining the Yilmaz refinement of Einstein's theory which eliminates black holes and the big bang.

Black Holes, Mysterious Objects in Space
Elementary information about black holes, including how they are observed, what happens to particles entering one, and a description of their close relatives, neutron stars.

How Stuff Works: How Black Holes Work
What are black holes? Do they really exist? How can we find them?

A Black Hole on the Desk
By putting a black hole into a familiar environment like a desk, one may experience what `curvature of space' means in a new way, understanding the cosmological effects of light bending and gravitational lenses from this playground.

XMM: Black Holes and Quasars
Educational site on the Birmingham Uni XMM website.

Geometry Around Black Holes
A very basic web site on the geometry of black holes and what they would theoretically look like in space time.

Black Holes
Lecture notes for a course on Black Holes given at Cambridge. The course covers some of the developments in Black Hole physics of the 1960s and 1970s.

Black Hole FAQ
Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull

Anatomy of A Black Hole
From the University of Illinois. Educational sequence suitable for high school students.

Black Holes: Portals into the Unknown
An interactive journey into a black hole.

Black Holes
Observational evidence of black holes from Cambridge.

A Black Hole FAQ
A good list of FAQ questions with detailed answers.