On this website, It shows how to make the bottle rocket. There are also other links that show you exactly what to do and even how to design it. I don't know if this is the best resource, but its definitely a start. One of the things I found most interesting, was that the website also talks about trajectory and angle. That would be very useful information to know.
source: http://quest.nasa.gov/space/teachers/rockets/act11.html
