Not another Psychology vs Psychiatry debate please
There's a difference between the two professionals involved, looking at the end of the word you can see why "ology" is relating to science or theory and "iatry" is to do with medical treatment and involves education in medical care. There is a huge difference in the two positions stating that there is "more fact" in psychiatry is a pointless statement to be fair, that's like saying there is more fact in Applied Physics as opposest to Theoretical Physics, they both deal with some similar points but also a lot of points that are not really related - so arguing over it would be a waste of time and not helpful to the OP.
As for OPs question, it depends what aspects you are interested in, general psychology studies usually take a look at a wide range of studies, usually in education at say A level, the student will be taken through a number of case studies such as Zimbardo, Freud, Gardner & Gardner, Samuel & Bryant and more, A level doesn't really go into much depth but gives a good basic understanding of a number of things such as cognitive, developmental, social, physiological psychology then you look at research methods and ethics, it's only really if you study at college level or degree level that you get into deeper aspects of psychology, going into each area in more detail, behavioural and plenty more.
Psychiatry as mentioned goes more into medical study so looks at medicine, neurology etc but I don't honestly know enough to help out too much on this side of things.
Books for psychology, depends what you're interested in really...
I'd say take a look at:
Introducing Psychology: A Graphic Guide to Your Mind and Behaviour Introducing...: Amazon.co.uk: Nigel Benson: Books
Psychology: The Science of Mind and Behaviour Hodder Arnold Publication: Amazon.co.uk: Richard Gross: Books
Psychology AS - The Complete Companion for AQA 'A' Textbook: Amazon.co.uk: Mike Cardwell and Cara Flanagan: Books
Classic Case Studies in Psychology Hodder Arnold Publication: Amazon.co.uk: Dr Geoff Rolls: Books
But obviously it depends what aspects of psychology you are initerested in or if you are looking to follow something like A Level curriculum.