The internet is full of free information ready to help you with the social work exam. Below are just a few sites offering a wide range of information about a variety of mental health topics. Click around, see what's there, take what you like and leave the rest.
- NASW Code of Ethics
- DSM-IV at Wikipedia
- Everything else at Wikipedia (here's the Psychology Portal)
- Simply Psychology
- National Institute for Mental Health
Happy clicking, happy studying!