Not only did they put out a playbook, they actively recruited and screened people to take government positions. I read a post on Reddit from someone who went through the training. The whole idea was to find ideological supporters. Trump's problem in 2016 was that he wasn't prepared and relied a lot on existing government supporters and established GOP figures, who weren't completely loyal. This time, they were prepared. That's the reason why he's been able to move so quickly in the first month.
This is also why I'm flabbergasted that a lot of people seem to be dismissing all of this with words like "we survived his first term, the second will be no different". It is different! Incredibly different!
It seemed like Trump was genuinely surprised he won the first time. They were completely unprepared. But now they are very, very prepared, and they know exactly who to put in various positions in government, people who will never balk at what Trump wants to do.