Thank you so much for your reply, which I didn't see until now! Sorry about that. I'm a little confused about the mechanics of the board, but I'll get it.
Yes, I have read DR and am on my second reading and working the exercises, etc. now. Thanks for sending all of those essential links - I have seen and read most of them following other newcomer threads in which you've posted, and I've opened a bunch of them in tabs right now to read again. Many thanks again.
Many thanks again.