I shall not claim to be an expert on this. The opposite in fact. A while back I fiddled with e-book formats and programmes and found them relatively easy but the world has changed and moved on so that is all passé. We were talking about e-books today and how you might create them. PDFs are the easiest format because you can just create the pdfs and most devices will read them. I have French novels in pdf format and it is just easy and fuss-free. But what if you want something a bit cooler , classier and in hard copy? Those sorts of formats you will most likely pay for. Memento has great photobooks and they work well. Blurb also has some good ideas for publishing and I have seen print books from there too. I can only recommend what I have seen. Others may be able to suggest other sites and avenues for e-book publishing. Apple offers iBooksAuthor which means the books are both well produced, in terms of standard, and then particularly compatible with iDevices. As with anything on a computer – you just have to get going. If you still are thinking about it, these two sites offer some good help:
The main thing is to create an e-book which can be read anywhere on any device but if you actually want a hard copy of the book, then you need to look at the publishing options more carefully.