Help I just got a PS3

I just got the PS3 and need some help. Every time I start a game it says if I would like to use the game data what those game data mean cause I said no and still could play with my saved content.

What should I use to clean te inside of the PS3 and do I ever need to clean the inside if yes with what? 

Welcome to the family.

And for your fist question do u mean formating all saved data so you can start from the begining or something like that ?

I just got the PS3 and need some help. Every time I start a game it says if I would like to use the game data what those game data mean cause I said no and still could play with my saved content.herozs

Are you refering to Virtua Fighter 5? I know that it comes out when launching VF5. Whatever it means doesn't bother me though. 

not sure about the question but :

some games will allow you to save some of the game data on the hard drive : it allows faster drive acces and thus faster load times