For all of the vintage "toy" computers that I have made reproductions of one thing stands out,  they all had excellent manuals.  To that end I have created the TMD-1 Quick Start Guide, a small 10 page document that contains:

• A brief description of what a Turing machine is.
• A summary of TMD-1's characteristics.
• An explanation of what the various parts of TMD-1 are and what they do.
• What you should expect when you power-up TMD-1.
• A step-by-step guide to writing and testing a simple TMD-1 program.

I don't know if it's excellent or not, but my hope is that this will be all a person needs to understand and use TMD-1. I'm going to try it out on a few people to see if they can start writing programs (without any help from me) . I have posted the guide as a Word doc to the the Files section.