Thanks Dougie, that was the encouragement I needed. I've written the editor a short email in the hopes that the topic might be something of value to the readership. I recently corresponded with some readers who had some detailed questions and in our chats, their comments were uniformly "Good resource, just wish I had known about it earlier ...".
I know you yourself are a hero in these forums ... have you had a chance to look at the material? I'd welcome your own review too ... I know you and I have never corresponded before ... and I have no idea where your thinking on the material may be ... so if it is poor, don't hesitate to say that it is poor ... if it is great ... feel free to say that too. Remember, its free to download and any donations for its up-keep are completely the readers choice. Either way, I hope to keep polishing it over time.
FREE book on Raspberry Pi usage and programming