there are two books on the 'method' that are the best starting points, going through all the concepts and exercises involved:
'Pain Free: A Revolutionary Method for Stopping Chronic Pain'
'The Egoscue Method of Health through Motion: A Revolutionary Program That Lets You Rediscover the Body's Power to Rejuvenate Itself'
there is also 'Pain Free for Women: The Revolutionary Program for Ending Chronic Pain' - not so sure what the differences with this edition are, but the normal 'Pain Free' is the most important book to look at first.
all easily found on amazon etc and relatively inexpensive.
i'm no expert yet but the 'static back press' (basic lying position involving legs perched over a block at a right angle and sinking ones stomach area into the floor through abdominal breathing) has done wonders for my back discomfort. it is one of the most important exercises in the method and there is the 'static wall press' too. its all very 'natural' and as the book explains, there is a surprisingly precise science behind the exercises.
when i'm in a better state i will go and see my friend (recognised practitioner of the method) who can give me a tailored programme to 100% correct all of my bad posture/body alignment. but i prefer to try and sort out the liver/colon/organ stuff more before going at the twisted pelvis/bad shoulder and the 'smaller' details. that's the reason its all out of place in the first place.
i'd be interested to know how people get along with trying the 'static back press' because i do it for 4/5 days in a row and my back pain completely goes away and the spine feels a lot more solid/comfortable. there are exercises for all parts of the body though, and the logic/science behind why they work is thoroughly explained in the books.