That’s right – they’re free!
All of the Objective-C ebooks in the Xcode Primer series are now available for free!
They have been retired from the iBook store and Amazon 🙁
These books will no longer be updated or supported, but if you have a use for them, they’re right here.
Just browse the book pages and find a download link at the bottom of each page.
All books are in the ePub format and can be opened directly in iBooks for Mac and iPad and even an iPhone.
R.I.P Objective-C 🙂