title: What are the best wwdc videos to watch regarding performance optimization?
body: <p>There are are plenty of videos in Apple WWDC page touching on various topics regarding iOS, Mac OSX, Safari etc. </p>
  
  <p>I've seen some Apple WWDC videos, but I want them in categories; like all In-App Purchase videos in a particular section etc.</p>
  
  <p>Is there any way I can find a list of the videos for Performance Optimization in iOS only
  as right now that's what I feel the most important part of iOS development.</p>