A good book which is a nice simple read is Hyperventilation Syndrome by Dinah Bradly which I got off amazon.
It helped me a lot with correct breathing patterns and made me realise how my breathing was causing the other symptoms.
Love Piglet xx
"Supposing a tree fell down, Pooh, when we were underneath it?" said Piglet.
"Supposing it didn't," said Pooh after careful thought.