I'm running Mac OS X 10.5.8 on my MacBook with the Core 2 Duo processor.
I want to use iBooks Author and as I understand I need to upgrade my OS so I can access the App Store to download iBooks Author.
iBooks Author says it needs at least 10.6.6.
If I upgrade to something above 10.6.6, do I first need to upgrade to 10.6.6?
Can I download an upgrade instead of buying physical product?