First steps on Objective-C

After world of developing applications for mobile platforms Mac OSX called my attention, this blog turn up, where I will share my learning about Objective-C&Cocoa world and practical examples on the subject. Now, a week has passed since I got what it takes to star, and with the help of the documentation that Apple provides in his side http://developer.apple.com/, tutorials and other information circulating on the web, I mounted my fist App for Iphone, which is considered the advanced 'Hello world' in developing app for Smartphone. This is a simple calculator, with basic operations, with which I was able to refine the basic concepts and design patterns of App for Iphone.