Thread: really, really scary experience

hi i have been wanting to get lucid dreams for the last year, but i have never had one, till yesterday.. you know i have never had the motivation to write a journal and i have never really put in much work in getting a lucid dream. All this happened yesterday evening. and i wonder if anyone of you experienced members could explain all this to me;

Yesterday night, me and a friend was lying in our beds watching a movie on my portable computer. We are currently living in an old house in southern France. In the end of the movie I fell asleep and had a really weird dream where I was at a school trip with my whole class. At first I remember that things changed as I looked another way, for example roads looked different when i looked at them a second time, so i remember that in my dream I knew something was very fishy. The dream continued and became a little of a nightmare because i felt someone was following me, not a person, but some kind of demon/ghost/spirit(???). The dream ended (I thought so anyway), by me waking up, seeing that the computer had been turned of and that my friend was sleeping. I looked around the room and decided to fall asleep again. I started sleeping and woke up(what i thought again) by hearing loud footsteps throughout the house. I got really scared since it was only me and my friend in the house. I tried to get my friend, eddy's attention by saying his name, but i couldn't it was like someone was preventing me from open my mouth, i tried to move but i couldn't, It was like a ghost held me in my dream. I wanted to wake up from this state but i couldn't. I got really scared, and with all my power sat up in the bed, and i was awake. When i was in this state i was fully conscious. And it now feels like it was a lucid dream or some sort of astral projection. My friend tells me that he was awake all this time and he didn't see me move or anything(when i looked at the computer and the whole room i was sitting up in the bed)!!!

Can someone explain what happened to me, cause i am afraid of sleeping!
in some ways this was cool, how can i achieve this state again?