Making Money with Android

How to use leaderboard google play

Hi eveyone, I want to use leaderboard google play for my game to user post their score and share. I read on developer android but I don’t understand. Can you help me to do with it?

You can’t say “I don’t understand anything” and expect people will explain you everything. Please tell me where exactly you have problem and I will help. Paste some code of your tries or smth.