I'm a Christadelphian - what would you like to know?
Here's a good website which gives you a lot of information. You can also find out about courses to help you learn to read and understand the Bible for yourself & to find your nearest Christadelphian ecclesia. http://www.thisisyourbible.com/
Also, the BBC has some information: http://www.bbc.co.uk/religion/religions/christianity/subdivisions/christadelphians_1.shtml
(If the thread is about celebrating birthdays, everyone I know does).