How does a turbo work ?

[Medic-one]

Hi Guys,

I'm thinking of getting a Mitsubishi GTO/3000GT Twin turbo over the next couple of months and this car has, at the name states "twin turbo's".

But how does a turbo work, who can explain in plain simple English what it does and how it does it, bearing in mind i'm a total carnoob if it comes to technicall stuff (and English isn't my first language).

With my celica GT (n/a) i just wait untill the motor is at temperature when it's cold in the morning before i "start enjoying it", but i've heard that with turbo's you have to wait for some boostlevel or something before you can use it, and after using it goes down and has to recharge, or am i just talking jibbajabba at the moment.