We are in the process of turning the Gigatron in a kit that can be built by others. For this, I’ve made a full-colour booklet that contains a generic explanation about the electronic components used, a crash course in soldering and the actual instructions to build the Gigatron. It includes many pictures and describes how to perform tests during the building process. In the appendix, you will find the full hardware schematics.
With this manual, even less experienced people should be able to build their own Gigatron.