Newbie wants to create a PDF reader for ipod touch - what's the best approach?

Question

I want to make a small app that displays a PDF, presenting zoom-able single pages with a previous-next page function.

Answer 1

The Core Graphics API is pretty much the same in Cocoa and Cocoa touch. Read up on CGPDFDocument, it should provide you with everything you will need to render PDF pages. You won't need to read the PDF spec or use a library to parse PDF files directly. You will probably to learn more about Core Graphics / Quartz 2D / etc. to understand how to use those functions inside of a Cocoa app.