Please see http://www.bahai.org/
That will answer your questions.
Baha'is believe that all religions are the truth, and that god contacted many different Messengers to disseminate this truth, including Adam, Noah, Krishna, Moses, Abraham, Zoroaster, Buddha, Jesus, Muhammad, the Bab, and Baha'u'llah himself. They are conservative like other Abrahamic religions: Sexual intercourse is only meant for marriage. They believe that the world should be united under one true religion, one government, one language, and that everyone should have equal rights.