Apple has posted an online application for authors looking to publish and sell their own works on the iBookstore. A new page on Apple’s iTunes Connect developer/media portal reveals the technical requirements for distributing content on the iBookstore, including an Intel-based Mac running OS X 10.5 or later, at least 1GB of RAM, QuickTime 7.0.3 or later, at least 10GB of available hard drive space, and a broadband Internet connection. Book…