I would also read up on bipolar disorder. There are a lot of good articles online about it, and some pretty good books you can get. I know buying books can get expensive but there are some libraries that have a variety of books on MI. And sometimes buying an e-book can be cheaper than getting a hard copy (at least sometimes). I m currently reading a book called "Taking Charge of Bipolar Disorder," by Julie A. Fast, and it is really helpful.

A couple of websites I recommend are Depression & Bipolar Support Alliance - Depression and Bipolar Support Alliance and NAMI: National Alliance on Mental Illness - Mental Health Support, Education and Advocacy. DBSA deals mostly with depression and bipolar and depression, while NAMI deals with mental illness in general. I also like www.getselfhelp.co.uk and Free Resources For Therapists To Share | Psychology Tools. They both have stuff you can download and print out, like informational sheets, and worksheets, etc., plus references to other helpful websites.