The title is misleading: this is not a history of the 90s but rather an essay ON the 90s, or rather on different topics (rave culture, gaming, Clinton's and Blair's Third Way politics, Young British Artists, dot-com bubble, Millenium Bug, apocalyptic cults etc) that, taken together, give the reader an obviously incomplete but interesting picture of what it was like to be there at the time. If you are old enough to remember the 90s, this is going to be a good trip down memory lane. If you aren't, it'll probably make you curious to find out what some of these things really were about.
As for me, the part about the Baywatch opening theme brought me back to my own private 90s in a split second.