A little difficulty for me is 'chicken and egg': do I wait for folk to ask for material in e-book format, or do I do it first . . . . mebbe they don't want it . . .
Most of my material is KISS (keep it simple, stupid), it is only recently that I have even divided books into chapters!
>e(book) is a container
Yes, and for most files it should be easy to script - then there are the exceptions, and checking them all . . . .
A pity that e-book on demand, like pdf on demand from a site is not really helpful.
Off-topic: Emacs - great prog.!
I was spoiled in my early days of making this material available on CDs, by finding a search program called ISYS (only under Win). Its building, indexing, search and display, stats, search-term highlighting, jump to, notes with refs . . . it was so easy and effective that I did not need to do anything sophisticated. Alas it became too successful and thereby expensive, so I have to put up with Google. But they kindly allow its non-commercial use on my site for which I am very thankful.
Millions of hits every month means that I am doing something right.