Reddit reviews Mastering Yang Style Taijiquan

Try the Yang Jwing-Ming books on it, or take a loook at the various manuals translated by Brennan.

Taijiquan: Classical Yang Style

Tai Chi Secrets of the Yang Style

There are also Yang Zhenduo videos on the long form.

Part 1

Part 2

Part 3

There is also Mastering Yang Style Taijiquan by Fu Zhongwen or the Taiji Saber. Here is a video of him performing the hand form, and saber.

Disclaimer: I am a total gongfu noob, been studying and practicing for 4 months. That being said...

Anecdotal Evidence: I seen great improvements in my mood, level of relaxation around others, lower anxiety, and numerous improvements in my physical abilities. ROM of my knees(I'm recovering from surgery due to OCD in both knees, March2013/Oct2013 surgery dates), now at full ROM, even under support, I can perform tong zi kong(Shaolin Yoga) moves like Golden Tortoise Exploring the Way, with a less extreme angle of the ankles. Improved depth of my squats and horse stance. An unbelievable improvement in back and neck pain and flexibility. Major improvements in the functioning of my shoulder arm ball socket and surrounding structures, almost no more popping and improving each day.

I am teaching myself while I search for a teacher/instructor. Living in a small town makes it difficult, but that isn't a reason sit around doing nothing, get in there and study, experiment. No teacher can compare to your own body, if you listen to it.

The resources I've used have been youtube and books. The tools your need are patience and mirrors. The movements you make will always be wrong, but if you practice and study, practice and study some more, and watch your own movements you should be able to improve and be less wrong than when you started.

Ian's Youtube.

A few months ago he started streaming his morning 2hr workouts for 30 days. These were very motivating and he shared lots of really good information. I'm just now going back through each day and cataloging the information he shared. The series that explains each movement of the 24-form Yang Style is also full of extremely useful information and a great place to start.

Book: Mastering Yang Style Taijiquan

This book has been indispensable. It is full and great explanations of the internals and well enough detailed illustrations to supplement. Great explanation of the taiji principals. Would recommend 100% if you settle of studying anything in the Yang family.

I'm actively looking for a teach/instructor locally, but I'm about to give up and think about moving somewhere else to study under someone.