Before going through the code, consider visiting PushCoin developer site: https://pushcoin.com/Pub/SDK/WelcomeDevelopers
This README provides an overview of the repository.
At the top project-level, there is a directory per OS platform for which the 'PushCoin Mobile Application' has been ported to or is in the works. You can also find numerous short examples or test-code, in various programming languages, demonstrating key operational features of the platform.
Navigate to the platform or example that interest you. Try the code out. If you run into problems, visit PushCoin Developer Forums (https://pushcoin.com/forum/) and seek help.
-- PushCoin Dev Team