Why wont my alarm wont stop going off even after i put the key into the ignition

What is your question?

The drivers side key unlock door wont let the key unlock it but the passengers side door will, but when i do the alarm goes off and it wont stop even after i put the key into the ignition and i can start it up and drive it down the road with the lights flashing and the horn going off. How fo i make it stop and disable the alarm?