they have to have it in a format that's usable to them. .Epub and .mobi are the same formats public libraries use for their electronic books. And, once
If you're still with me, that's great. Don't get too fussed, it's all a learning curve, for you and for me.
Anyway, Kindle says that the normal turnaround time for getting a book online with them is between 12 and 24 hours. I uploaded the final version of the book at 4.27 on Monday (I noted the time exactly!) and, when my wife came home told her she wouldn't be able to see it till the next morning. Nothing daunted, she checked anyway, and there, at 6.15, the book was up and running online. So of course she had to be the first to buy a copy, which rather puts our profits out of kilter, but at least it meant someone bought it. Later on, we were unexpectedly called over to my son's house to babysit, because my daughter-in-law had cut herself rather badly and was down at A&E. So Grimhilda! got its first 'reading to a grandchild' - or at least two or three chapters did. This same grandson, who'd seen the musical version back in 2012, and declared it 'awesome' at the time (so generous!), two years later struggled to remember it. Such is the price of fame. However, I gave him a few details to remind him, and he did remember actually going to it. I'm not sure that he realised the book was telling the same story. Well, that's the advantage of being able to take the same material and re-do it...
You can find Grimhilda! here. Currently it's available for Kindle readers of all sorts, as well as Kindle apps on PCs and Macs, and on iPads and iPhones. And the Kindle apps on android phones too.