Learning PMTS can be very simple if you follow the progression HH has given us. Book 1, Book 2, then Essentials. No need to over analyze or question the steps that HH has laid out in the books and on this forum because they simply work. Nike has a slogon "Just Do It" and that applies here. Just Do It [PMTS] and you will be on the road to expert skiing.
Historically this forum has been used as a distance learning system to supplement the PMTS books, DVDs, and camps.
If you are learning PMTS from a distance then its very helpful to read the books and watch the videos, starting with Expert Skier 1.
And if you are attempting to teach others I'd suggest adding the Instructor Manual to your collection
Read this post by Harald Harb written in 2004 - Book Learning
Nearly every question I can think of has already been asked and answered on this forum. The best way to search the forum is to use Google. Here is an example that you can type into the google search box to find informaing on counteracting movements here.
"counteracting" site:http://www.pmts.org/pmtsforum
or
"counter acting" site:http://www.pmts.org/pmtsforum
Using Google focused on searching the PMTS forum yields a wealth of information!