Get 6 chapters of an iBook-authored Cocos2d and iOs Game Programming book for the iPad (a training guide w/ movies) bit.ly/Mo6Wwg
— Justin CartoonSmart (@cartoonsmart) June 20, 2012
You'll then get a Direct Message with the link to the iBook (it'll be in a zipped file), just click to download. The iBooks file is inside, drop it on iTunes, and sync your iPad.