FG Press recently released its third book, Accelerate: Founder Insights Into Accelerator Programs.
If you want to understand how an accelerator program works from the inside or are considering applying to an accelerator, this is the book for you. Luke Deering interviewed 150 entrepreneurs who have been through a variety of accelerator programs to get their insights. He originally did this as a Kickstarter campaign which I supported and wrote the foreword for.