Our Beta kits are easy to assemble with just a Philips-head screwdriver and some common sense.
We'd like to have a step-by-step assembly guide here, but for now, the photographs and captions at http://bookliberator.com/making should be a sufficient guide. The main question people usually is about which screws match with which holes, and the photographs and captions on that page should answer that question.
If you're good at explanatory drawing, please make an assembly guide and post it! We'll gladly host it here.