Won't help much with Star Wars, but for the serious techno-nerds, and I firmly class myself in this bracket, I recommend an actually quite serious book called "The physics of Star Trek", ISBN 0 853 51149 X, which goes into all the various exotic devices (Warp Drive, transporters, etc) and tries to analyse how they do or could work within the current understanding of science.
Incidentally, "Warp Drive" is a brand of carbon-fibre propeller made in the USA and used mostly on microlight and homebuilt aircraft. The UK distributor is Mainair in Rochdale.
G