Hi again, thanks for the replies -- and for the encouragement! I guess the number one issue that I noticed was that I had no problem getting an image to display "full page" in iBooks (on the iPad), regardless of whether or not I was in portrait or two-page landscape orientation. However, in Kobo that supposedly full-page image would "break" into two pieces with part of the image on one page and part on the next.
Is there any concensus on the best way to do this, that
will work in all the various softwares/platforms -- or, at least, most of them? I searched the archives here for "full page image", but all I end up with is a billion search results, and I just don't know where to begin.
That is, I suppose, the biggest issue that I'm trying to resolve at the moment -- and sorry if this post belongs somewhere else in here, but there's so many "specific" forums (er, fora? forii?) to choose from, but this seems like such a generally-applicable question that I thought it probably belonged here.
Also, just as an aside, when I started doing web design it was so EASY it was ridiculous! I started waaaaaaaay back before there was any such thing as CSS -- in fact, HTML tables had only just arrived on the scene, not to mention animated GIFs. Wed design was a breeze back then! And now, well, I just feel so very old and feeble-minded (compared to so many kids out there who seem like they can do "everything").