Textbook: Exploring Black Holes: Introduction to General Relativity by Edwin Taylor and John Wheeler. San Francisco: Addison Wesley, 2000 (1st edition). Chapters 1 and 2 online
Textbook: Exploring Black Holes: Introduction to General Relativity by Edwin Taylor and John Wheeler. San Francisco: Addison Wesley, 2000 (1st edition). Chapters 1 and 2 online