Bought the kit for my wife who is learning electronics and programming. Kit was missing a few resistors and an IC socket. Documentation was greatly lacking. Low quality BW print out with only the most basic information to solder kit together. Does not explain details about the kit and component selection. Jumper settings are given to you and your told if you don't know what they mean don't bother. Not a very good kit for someone's trying to start out in the homebrew crowd.
I'm sorry to hear you were missing some parts, although I'm disappointed you didn't mention this to me to give me a chance to rectify it.
Yes, the documentation posted out with the kit is black & white, but as it says (and also on the shipment email) full documentation can be found on the RC2014 website which is in full colour and with high res photos and a lot more info.
This kit is intended as an easy way to build a simple Z80 computer. It is not designed as a tutorial course with every component selection explained. Whilst the website has a fairly detailed description of how each module works, if you want to dive deeper then that's down to you