title: Writing PDF reader Library
body: <p>I have searched for PDF reader library that is licenced under LGPL or the like but could not find. I found only GPLs. Now I need a help to write my own library to read the PDF file and display it in my app. I have downloaded PDF Specs 1.7 from Adobe and I'm trying to search out a beginner tutorial but I'm yet to find one.
  Is there a beginner tutorial for writing my own reader library (only reader)?
  Thanks</p>