Blast from the past
Just about a decade ago now, I read my very first markup book. Fortunately, it was a good markup book, lucid and understandable. At that point in my orbit, I could have been scared off. I wasn’t. In large part thanks to that book, I became a tolerable designer of DTDs.
That book is now online, and by gosh, it’s still lucid and understandable. Even if you don’t write DTDs any more (and how many of us do?), it’s a fine, fine resource for how to think about text modeling.
I’m happy to see it again.