title_body: Where can I find Apple's iBooks formatting guide? I made a decision not to sign up for Apple's iBooks publishers' account (mainly because I don't own a Mac and use a Linux box most of the time -- also I don't want to buy ISBN numbers for my ebooks when selling them).  However, I would likely be uploading content to the Apple store via Smashwords. 
  
  How can I find out the latest formatting requirements and CSS support for Apple's iBooks? 
  
  Unlike Amazon, for some reason, Apple doesn't make this information available anywhere.  Can you recommend a good online resource for preparing your content for iBooks? 
  
  I can follow the Smashwords formatting requirements (and I have an iPad and iPhone to test things on), but some store/device specific information might make it easier to figure things out with.
upvoted_answer: Yes, you can get a PDF of the iBooks Asset Guide from their site: https://itunesconnect.apple.com/docs/iBooksAssetGuide5.1Revision2.pdf