Does anyone know where you can publish or host epub documents?
I've found places to upload PDF format eBooks but not epub ones.
Any ideas would be much appreciated.
You can host your ePubs on nearly every Web-Hosting platform you have access to. Ex.: Your own website, if you have one.
In addition you can transfer it to different shops like Apple iBooksstore, Google Play, Kobo, Nook, ... to sell it on their virtual bookshelf.
If you only want to store it somewhere so other chosen people could download it, you can put it in the public folder of a free dropbox account and share the link with these people.
You can also send the ePub by e-mail if it not too big.
And Last but not least you might create your own browser driven online reader with bookshelf in the world wide web using readiumJS (readium/readium-js-viewer · GitHub). But be warned! readium JS is early beta state and very tech savvy. It's nothing for beginners and far away from being ready to use.
Thanks heaps for all that info.