Lost guide for Xcode

HI guys!

I was going through one of the app developer guides for XCode and some days ago, said guide disappeared. This kind of unfortunate for me because I am not the best at coding and this guide was more visual and practical than code oriented.

This was the address:

https://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOS/index.html#//apple_ref/doc/uid/TP40011343-CH2-SW1

I have spent days looking for it everywhere and couldn't find the guide.

I'll be very thankfull with any help.

Thanks!!