Hi all, before I start I'd like to let you know that I'm a total n00b when it comes to car engines, parts and anything mechanical

. I'm a long time computer entusiast and I visit quite a few PC related forums, so I know how annoying its when somebody starts asking questions before they even use Google or simply the Search button of the Forum......well here is my problem:
I'm European and English isnt my first language and even though I live in USA and speak the language very good, the technical part of it (specialy car related) is very poor.
I know how to search but I dont know for what. I see you guys talking about parts but I dont even know how they look like or what they do.....
Anyway yesterday I bought a brand new 04 Spec V and I'd like to to some modding without spending a fortune so I have a few ?'s:
I have 98 miles on my car, how do I drive it so I dont ruin the engine from the beggining?
I've read aruond here that some knock sensor, header, mufler and cold air things give more power to the car, could I have some more info on what exactly those are?
Can I get those blue head light for it?
When do I do the first oil change and what oil should I use? The dealer told me first oil change at 3750 miles, isnt it too long?
Thanks in advance for any input!
BTW I love the damn car, much better than my ,91 240SX
