Hi, im currently scripting a server and i want to know how a players progress is saved on the server? 

So for example, when the user selects their skin i want the player to keep their skin until they decide to change it manually, instead of the skin selection appearing everytime someone logs in.

Also how do you save the position of a player when they exit the game? and when they log back back in it should log the user back to the same posiiton they exited?

What are the areas in the SAMP-wiki should i look into to make something like this?