Wikitude

Example Project

Hello I've a few questions regarding the example project.

 

I've downloaded the wikitude SDK sample and installed the apk and I tried to run it.  Where can I see the source code of the main menu UI? How does the wikitude SDK works exactly. Ive tried the tutorial part and ended up gave up and I download the ready made example instead. Where does the POIs information come from? 

Really hope that someone could enlighten me and I hope that I could learn from it.