Unfortunately the school has been closed to westerners for over 15 years now, and according to multiple accounts it sounds like DJ passed near the start of 2020 unfortunately. So while there is more for you to learn here (Jim McMillan wrote a book as well, one of the other few westerners, thetaobums forum has a bunch of archived discussion on Mo Pai even with some students commenting now and then, kostas did a Q&A there that’s worth reading too). However Mo Pai is just a stop on the way, it isn’t the destination (as unfortunate as it may seem, after discovering it).

So to answer your question, the principles of the practice are in that book along with everything you need to take your first steps down an endless road, but don’t expect a guide to becoming the next DJ.