DO NOT select spreads when exporting the PDF. AFAIC this setting is only useful for proofing purposes when dealing with individuals that have no idea how to use Acrobat’s view settings.
OK, thanks...how about for this:
a) For printing purposes, is it correct that I leave them joined together if I want to print like a book? (just want to be sure!)
b) Page #s will auto-populate and correct themselves if on a master regardless of if I add or remove pages here & there, correct?
If you could just confirm that would be helpful, thanks!
For printing a book it is vital that the pages NOT be joined together in the PDF. Page 2 gets pinted on the back of page 1. The exact pattern for the printers spreads is determined by the page count and the binding method.
You can demonstrate this for yourself by first folding a piece of paper into eighths (for a convenient count) and writing a series of consecutive number on the folded panels as you work through from front to back, then un-fold the sheet. Now take two sheets of paper and fold each in half, then unfold. Write numbers on the sheets flat in front of you as they would appear to you as a reader, then put the sheets together and try to read the book.
page number markers on the master page should update on the live pages when you cahnge the page order or page count.
What is the 'command' to disjoin all of them in the pages panel, in InDesign? (so as not to do manually)
You are suggesting this is the way to go and that, that would be most appropriate for the print house, am I following?
Leave them alone in the pages panel and export to PDF without the spreads setting selected.
And make sure you're using Adobe PDF (Print), not Adobe PDF (Interactive).