rendering some characters in OpenGL ES 2.x scene - ios

I’m new for OpenGL ES 2.x on iOS, and I’m trying to render some characters in the OpenGL ES 2.x scene. But I don’t know how to do it.
So anyone who can point me in the direction of an Objective-C tutorial or post some sample code?
Any help or advice would be much appreciated.

This question is asked a lot because OpenGL does not have built-in support for text fonts. There is a good survey of solutions and discussion here:
http://www.opengl.org/archives/resources/features/fontsurvey/
http://stackoverflow.com/questions/18557535/text-font-rendering-in-opengles-2-ios-coretext-options-and-best-practice
But the easiest solution by far is to use the Print3D class in the PowerVR SDK:
http://www.imgtec.com/powervr/insider/sdkdownloads/index.asp

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How can I load a 3d model to an IOS app, and scale/transform/rotate it to place on an image?

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XCode project type for this application? OpenGL ES or View-Based?

I was wondering what project type this application was probably developed using?
The app is called Sound Literacy.
http://www.youtube.com/watch?v=i7giaN5T7ww&feature=related
I'm new to developing, but want to create an application that uses these same features. I'm thinking either OpenGL ES Application or View-Based. What do you guys think?
Thank you in advance!
The "project type" really doesn't matter. All it does is give you different boilerplate code to start with. So start with whichever one seems most convenient to you.
I would say OpenGL ES since it's a lot more customizable.

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