Can someone teach me the basics of pp scripting?

Things i would like to know remember for my place not my profile:

1. How to get them in your game in the first place

2. How to give them away(When they join, get a kill, make it fall from the sky, ext.)

3. How to make a leader board at the bottom

1. You earn them from in-game sales.

2. You'd use this line with a bunch of more lines to how you want your points to be distributed:

game:GetService("PointsService"):AwardPoints(player.userid, 1) --1 Is the amount of points given.

1. A leaderboard is feature at the bottom of the page when points have been awarded to players in your game. They only work for player points.