Einstein Special and General Theories of Relativity
	Plasma Cosmology:  An Alternative to Conventional Cosmology

References on the Net
 

	Albert Einstein - Relativity:  The Special and the General Theory (this is the complete book of Einstein online). Highly Recommended.
	NOVA (PBS):  Relativity and the Cosmos (this explains the Special and General Theory of Relativity in very simple terms, using animations).
	The Plasma Universe (This site supports the idea of Plasma Cosmology, which is explained very well).