So today I was speeding by (going 80km/h in a 60km/h) and some rich dude in a Jag doesnt look left and makes a right turn right into my lane. There was about 3 seconds in between us! Luckily the ZX3 is one of the lightest cars in its class, and I was able to stop just before smoking this idiot. I started chasing him, but he ran a red light and escaped me (i guess he didnt care, he was driving with dealer plates)...
ANYWAY! The reason I am starting this thread is because I was honking at this ****, and he didn't even know i was behind him!! I really need a better horn.
Now I was looking at an earlier post, and one of the best place to find horns is
http://www.jcwhitney.com but i am not sure what horn would be the easiest to replace the existing horn.
Is it electric, or is it air pressured? <-- a major debate
I am also unaware of where the horn is mounted. From my personal research, I hear it is under the front drivers side bumper and looks like a black snail (LOL). But yea, I know what the horn looks like, but where the hell is it!
One last thing. Is this an easy replacement? I'm a newbie when it comes to cars

(yea, this is my first car, and it took me 18 years to save up for it)
Thanks for the help, and thanks for reading!