I’ve been working on the second book in my How to Create Ebooks series, which will be focused on making fixed format ebooks. Fixed format ebooks work particularly well for children’s picture books, though there are number of other useful ways to use the format.
I came across a video on Lynda.com (full disclosure, I am an affiliate) recently that does a great job showing the differences between reflowable ebooks (usually used for novels and text-heavy books) and fixed format ebooks. Hopefully this clears things up for anyone who was wondering!