First thing first, I applaud your decision to move forward.
Second, EVERYONE has "been" there. Some of us grew up with parents who fostered the knowledge, and made it a group event. Others (like me) grew up with parents who knew absolutely nothing about cars except the most basic of maintenance, and were forced to learn ourselves. I will personally say, as long as you have the tools and a "fall back plan" (IE, a friend who is knowledgeable), diving head first into modding is a good way to learn.
Third - remove the F&F quote from the sig...most people say that as a joke
lol
Finally - an exhaust and intake is generally something many modders call "day 1" mods - something they throw on the first day they own the car. They are basic, easy-to-install mods that almost everyone will do to their cars. Many times, a simple socket set and some screw drivers, and a few hours of your time will be quite sufficient. Obviously you'll need some way to get under the car to get to the exhaust, but you get the picture.
My point is, you are more than capable in doing the simple mods. Don't doubt yourself, but if you have questions, ASK! There are PLENTY of people either on the board (or your friend of course) who are ready and willing to answer your questions. But the one thing I learned that I cant stress enough - try to do it yourself first. Do the actual dirty work yourself first, and have your friend be the eyes in the sky - he'll say something if you're making a mistake.