A set of notes outlining general relativity and its applications, including modern theories of FTL travel and wormholes.

A very thorough introduction, studies the Schwarzschild, Reissner-Nordstrom, and Kerr solutions using a variety of coordinate systems. Additional topics include gravitational collapse, horizons, singularities, Carter-Penrose diagrams (aka conformal compactification), Hawking radiation and black hole thermodynamics

A simple derivation of Einstein's theory of relativity which is widely taught to undergraduate physics students. The mathematics required though make this easy for anyone to understand.

Learn about Einstein's Theory of Relativity online. The class covers cosmology, the Twin Paradox, space travel, and black holes.

A course from the Department of Mathematics at Hofstra University on differential geometry and general relativity.

Introductory course on General Relativity

Describes the properties of a gravitational field surrounding a given mass.

all the materials from a graduate-student-level course on Gravitational Waves taught at the California Institute of Technology, January through May of 2002. The materials include Quicktime videos of the lectures, lists of suggested and supplementary reading, copies of some of the readings, many exercises, and solutions to all exercises.

The theory of special relativity in an easily understandable way.

Online papers, images, movies and paper models.