Apple Opens iBookstore to Self-Published Authors

Details from ars technica:

To take advantage of the service, you must first have an International Standard Book Number (ISBN) for each work you wish to make available for sale. Obtaining an ISBN isn’t as difficult a process you might think; it can take as little as two weeks. Second, you must have a copy of the work in ePUB format. There are a variety of different ways to convert text into ePUB format, many of which are free (a list can be found on the LexCycle website). You must also have a valid iTunes Store account as well as a US tax ID.

The last requirement is that you, as the author, must have access to a modern Mac. In order to participate, you must encode your eBook with Apple’s software, which needs an Intel Mac running at least OS X 10.5. The encoding process most likely adds Apple’s very own brew of DRM to the book, ensuring that your writings won't be distributed outside of the iPhone or iPad.

MacLife also has something.