Royal Australian and New Zealand College of Psychiatrists

Royal College of Psychiatrists (UK) (For excellent, regularly updated, easy-to read patient information sheets for all manner of physical and mental health disorders)

Cochrane Reviews (For the most up to date information on evidence based practice in psychiatry. Summaries are provided in plain English as well as detailed scientific meta-analysis)

National Institute for Health and Care Excellence (evidence-based guidelines for a range of mental disorders) (My favourite online resource which helps to understand what I refer to as the "dodgy dichotomy" between functional and organic symptoms)