Try looking it up on Google. I'm sure you'll find some helpful information there. ^ ^; The only thing I know about lucid dreaming is that you have to wake up in your dream... It's happened to me once recently, that I can remember, but it wasn't intentional. =3
No, you dont have to wake up in your dream. Trust me I know about Lucid dreaming, its all about realizing your in a dream.
I've tried this once. I was just walking outside on the side-walk, and all of sudden I just realized ''Hey wait a second, how'd I get out here?'' ZOMFG I'm dreaming... I can do whatever I want!