To CLOSE this topic permanently, my opinion:
It was clear quite quickly that by a huge majority, the book had value. So, I ordered it rather quickly, and it came in yesterday morning. This has provided me a unique ability to comment on my own question, something rarely possible.
I had asked: "...it's really 'required reading', or is most of the information available for free on the Internet?" The honest answer is NO, it is not required reading and most (if not all) of the information is available on the Internet. But, this answer is pretty superficial, and doesn't come anywhere close to addressing the details contained in Barry's book.
To substantiate my claim that Barry's book is not "required reading", I would argue that through various support websites and, with significant weight placed on this forum, many questions can be answered here.
However, the above has several (quite) significant flaws:
- It assumes that the person responding has the same knowledge as Barry, which IMO is an incorrect assumption.
- Asking users on this forum (or other support websites for that matter) could be considered unfair to the parties asked to research information for you, as it often requires work and research by others on your behalf (i.e. Do the dang work yourself!). This is not fair, (again, IMO), as Barry's book addresses so much. He already invested the time I'm speaking of.
Bottom line:
From my pre-final-setup questions, the perceived challenges I see in the future, and trial-and-error that would most likely take a very long time to resolve (if at all), Barry's book is not required reading.
But, Barry's book is not written for those who choose to do everything themselves (it's not a DIY book, but an informational one), and for better or worse, it's written for those who choose to opt-out of prolonged DCS setup that would most definitely require a flurry of questions posted here on this forum.
For me, having skimmed through Barry's book more than a few times now, it appears his book is an undeniable requirement for those that want to concentrate in specifics (that Barry admits are beyond the scope of his book, page 54): "Those topics, while very important, are completely outside the scope of this book.", with strong consideration given that the proposed reader is respectful enough to not "milk" freebee information from others (i.e. forum users who have Barry's book).
With no slight intended against other purchasing options, I included Barry's book with other purchases to take advantage of "Am*z**'s" free shipping, for a total cost of $18.15. Since DCS specifics are not my primary goal {when gradually stepping into the world of DCS}, Barry's book is exceptionally good. It addresses areas I needed clarification (track wiring), while simultaneously addressing my specific remote (The "DCS Commander").
My conclusion is that if you're willing to waste a lot of your own personal time regarding things as simple as connecting two wires to a track section, or how to software upgrade your controller's software/firmware, then you don't need this book.
But if, like me, you want to concentrate on layout, decorative accessories, expansion of engines and rolling stock, than you would be foolish to not buy Barry's book.
It's like re-inventing the wheel; it's been done (what I've read from Barry's "Forward"), so why waste your time when Barry has already done the work for you? To avoid paying $18, one would fight, scream, pull-out-their hair, and curse like a truck driver (no offense to truck drivers), for just a fricking $18. Why???
IMO, the answer to my own question of: "...if it's really 'required reading', or is most of the information available for free on the Internet?", is:
YES!