habrahabr.ru: атрибуты свойств в Objective-C. Инструкция для начинающих objective cmanual

stackoverflow.com: get thumbnail image from PHAsset objective ciosmac os

stackoverflow.com: save image to custom galary folder using phphotolibraty objective cios

stackoverflow.com: upload videos from gallery using Photos framework objective cios

stackoverflow.com: how do I wait for an asynchronously dispatched block to finish? objective c

blog.garstasio.com: ajax requests (pure JS) JavaScript