The following websites also have helpful, free resources, which incorporate cognitive-behavioural therapy (CBT) and relaxation skills techniques:
http://www.cci.health.wa.gov.au/resources/consumers.cfm
http://www.anxietybc.com/sites/default/files/CalmBreathing.pdf
http://www.anxietybc.com/sites/default/files/MuscleRelaxation.pdf