Thanks a lot for the clarifications Erin.
Here's my own experience with trying to astral project:
1) While trying to astral project I fell asleep only to awaken a little later by felling a gentle push pushing me down onto the bed (it felt as if I was being pushed from about 50 cm above the bed and down). I am not sure if this was real or just a dream, but it felt very real. No idea who it would have been pushing me, but I took it as a sign that maybe it wasn't time for me to project yet.
2) About the same time I had an experience laying in bed trying to astral project and drifting in and out of sleep. Then after struggling with it for a bit I just simply got up and thought "hmm that was pretty easy". I then looked back down on the bed and was surprised to see my body wasn't there. I didn't think much of it at the time and continued to explore my bedroom - it was definately different than it used to be and after a moment I got a visit from an entity that had a strange energy about him. After talking to him briefly I began to suspect this wasn't a projection at all, but instead a lucid dream. Shortly after this I found myself back in my body feeling disoriented. Looking back on the experience I'm pretty sure it was "just" a lucid dream and that the entity was probably just a figment of my own subconscious mind.
3) During this time of experimenting I would often lay still, with my body "frozen" by relaxation/meditation trying to move without waking up my body. Most of the time I was simply fail, but a few times I felt a strong buzzing/vibrating feeling in some of my limbs that felt very much like the astral body was trying to move, but wasn't quite suceeding. Pretty frustrating. Eventually I quit trying, figuring I'd get back to it later.
4) A few weeks ago I learned a new technique for relaxing my physical body while waking up the subtle energy body - it was similar to the technique I had used before, just slower and deeper. One of the first times I tried it at home I started to drift off and for the next few minutes continued to drift in and out of sleep. While this went on I had a strong feeling of parts my astral/energy body moving around independently of the physical body, but not quite being able to break all of the "body" free at the same time. While this was going on I had the same strong feeling of "vibration" in the parts of the body that were breaking free. Although I didn't manage to leave my body completely it definately felt like a part of me was out of the body during the experience.
Since that experience I've been unable to repeat it, even though I've done the relaxation technique multiple times, some of the times even more thorough, but still no luck.
I've been using the book "A Course in Astral Travel and Dreams" by Belzebuub (yes, aparently that's his name) - anyone else have experience using this book?