Doctor Who; The Roleplaying Game ->

So one day I was just out at a store when I found this sourcebook for 12 and I thought that hey this is neat. and I don't really have anyone to game with so instead I just have these books taking up space in my house. So why not just dedicate an entire shrine, I still have no clue how most of this game works, I just think its neat I just think these books are neat and really wish I had some friends and any clue how the hell story points work. Eh i'll learn eventually.
What are Story Points?
Story Points are... their uses are X, Y, Z
go in depth on what X is and what Y is and what Z is