Romeo & Juliet Before Paragraph

I really do not know much about Romeo and Juliet. Everything I heard about it was that someone dies and there is a lot of romance involved between the two. I am not sure if I am right, but I think someone gets poisoned or something between those lines. Either Romeo dies or Juliet dies, but I think they both die. I will need to wait until I read the story then I will know what really happens.

Who dies in Romeo & Juliet?
Why did those people die?
Is the play overall good or bad in your opinion?