The Red Spiral Notebook

When a time portal traps Michael thirty years in the past, he decides to use his knowledge of the future to prevent the Oklahoma City bombing and the September 11th attacks. First, he must make himself wealthy. Las Vegas is an easy place to get rich when you know which team is going to win- and to get laid when you're drawn to beautiful women with insatiable sexual appetites who adore self-confident men. However, Michael learns that changing the future is more difficult than he expected and the results of his efforts alter the history of the world.