The correct term is bipolar disorder. Some people call it a disease though.

There is not a single gene responsible for bipolar disorder that has been identified.

First off, you have to understand what bipolar disorder is and be confident and comfortable talking about. remember people can smell fear. Look up websites on google and compile a list of information you think people would be receptive to. you may have to dumb it down a little and remember to a lock on your emotions if you have bipolar disorder.

Some do, some don't. Its about the same as with people without bipolar disorder.

Information about people with the bipolar disorder can be found on online resources like MayoClinic. Other medical websites with information about people with bipolar disorder can be found on WebMD and HelpGuide.