Vicki Murley, former web technologies evangelist at Apple, has produced a new iBook on CSS transformations. From the description:
If you're a web developer looking to create content that goes beyond typical gridded layouts, then this is the book for you.
Strong knowledge of CSS transforms is essential for creating interesting layouts and rich animations in web content for ebooks, native apps, and of course websites. This book takes you through each piece of the technology, with interactive examples along the way that illustrate key concepts, illuminate details, and solidify understanding. Whether you're a beginner who is looking to enhance a single web page or an experienced programmer who has gotten an unexpected result when dabbling with CSS transforms, you'll learn something new from this book. "CSS Transforms: An Interactive Guide" also touches on the history of this technology, browser support, and web standards in general. After reading this book, you'll have a complete understanding of the technology.
It was made with iBooks Author which means it looks great, but it's currently limited to the iPad. (Hopefully Apple's still working on making it compatible with the iPhone as well...!) However, Murley more than knows her stuff and if you're a web dev looking to up your game, CC Transforms: An Interactive Guide will certainly do that.