Lawrence,
The same size as FAA. I assume,when you finish your book, they will resize the images down, to the smaller size needed for the actual photo on the page, not sure.
As far as the "ease", NOW, pretty simple! They have ALL kinds of tutorials and then there's YouTube stuff too. Worst case, you can call me when you're ready and I'll try and walk you through it,let me know.
The 3 books that I've seen from Blurb, from my buddy the pro that shoots marine stuff,were amazing and as good as anything from Barnes&Noble, if there still is any Barnes&Nobles!
Rich