As a university in Turkey, we are planning to publish paid and free ibooks on the iBooks Store. The problem is when we check the ibook store from our İOS devices we can only see historical and royalty free books, plus the demo ibook "Life on Earth" and "Yellow Submarine" from Apple.
What does that mean? Why is the iBook Store limited to Turkish customers? And aren't we will be able to publish our content via Apple Store?
You can only published paid or free books to 32 stores, which is primary US, Europe, Canada and Australia. Unfortunately for the rest of the world (including the whole Asia), iBookstore is not available for publishing.
Your current option for iPhone/iPad publishing is via App Store (sell the books as apps).