Stephen Hawking's A Brief History of Time From The Big Bang To Black Holes

I read A Brief History of Time to prepare for Brian Greene's book The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory.
The reading went well from Hawking's book to Greene's book.
Greene lists Hawking's book, in a list of books he suggests you read, in the back of his book.
String theory, general relativity, special relativity and quantum mechanics are discussed in a manner that makes these ideas simpler to understand.