Great book, first 2 chapters are the hardest , but once you get past them your brain adapts to writing style or it becomes less dense one. I would highly recommend setting aside an afternoon to read this as it took me less than 3.5 hours of read time, but gained alot respect for the Wesley brothers among others of their time. Even provided many other great resources. I greatly appreciate not only a betas overview but many great specifics examples and even highlights of the early conferences etc. Def give it a read.