Very promising

I am very excited about iBooks Author and have been using it a lot. It has a lot of promise but right now it seems very unfinished, more like a Beta than a full release version. There are a lot of bugs and a frustrating lack of obvious features. Once they fix it up I can see it becoming the default app for publishing textbooks. As it is now I would only recommend using it if you are really serious about ebook creation and are ready to deal with the various problems and frustrations.

Pinguoren about iBooks Author, v1.0.1