Spacers questions..Pls help.

Chubby87264

Hi all, I'm a newbie to cars and stuff that relates to cars but I don't really know where to learn these things from because I'm still a little kid (senior in high school). Ok enough with the introduction, I have a question, well I have lots of questions but for now just this, "WHAT IS A SPACER? AND WHAT DOES IT DO?" I have searched "spacers" on google and here but I still not get the right answers. To some1 my question just stupid, but I would love to hear explanations from you guys. The only thing i know is those spacers have to do with the wheels, that's all i got. I'm planning to get the 370Z by next year or after I graduated HS and for sure I'll put in and take out lots of stuff on it, but gotta learn first.
Thanks in advance guys!

Ohh 1 more thing, I don't know if this thread falls in the right place in this forum. If it's in the wrong place then I'm sorry and pls show me where to post this at.