Preface: Yes or No

Ok, so I am finally starting "To Destroy You is No Loss" (and yes I am aware that this was last month's book, but I read August's book first)....and I got through about... ohhh.. 5 pages of the preface and I could not tell you one thing I read. I felt like I was reading a school history book. So here is my dilemna...I hear the actual book is a good read, so do I skip over the preface and just start? I usually am anti skipping through parts of books but I fear I will never get through this forever long history lesson (and I already graduated college, so if I don't want to read a history book I don't have to...don't judge me!). For those of you who are on the ball and have already finished this book, please give me some insight. If the preface is necessary, your argument better be pretty compelling.