How to replace cracked screen by yourself?

I live in California where earthquakes are a norm. This very morning a 4.4 hit and shook my room and dropped my laptop from the dresser leaving the screen with two cracks and a dent. I have done research and have come to terms with the fact that I will have to replace the screen out of pocket. I have model A1278 and am unsure if I can simply replace the glass or if the whole display is what needs to be replaced. Also, will I need special tools to replace it? Or is it just worth it to have apple or a computer place replace it? Haven't seen anything in terms of a price range on the web and would like help in that aspect. Thanks.