jus bought a focus RS, and tbh i know fuk all about them

in respect of, what turbo they are
whats limits of engine?
is it natural for fan to be alot even when not been toweling it?
arse end come out alot but is easy to control is this normal or do i have worn bushes?

jus little question and niggles,

so any info poeple could share with me would be greatly apreciated