How do I add Box2D to Xcode?

So I’m getting lots of errors (about 3,500) when I try to include the Box2D into my project.

I’ve followed this tutorial for it, but it doesn’t seem to work. http://www.gmtdev.com/blog/2011/08/18/cocos2d-x-adding-box2d-to-your-project/

Can anyone help?

You can use template to create a project that supports Box2D.

I could do that, but I’m trying to understand this so if need be I can attach other things to the project.

Not very detailed but should help you:
http://www.gmtdev.com/blog/2011/08/18/cocos2d-x-adding-box2d-to-your-project/

And a sample project with it in:
http://www.gmtdev.com/blog/2011/08/19/how-to-use-box2d-for-just-collision-detection-with-cocos2d-x/