Intake System for Civic?

I was wondering, it is difficulty to install a cold air intake system in my 95 Civic 4D LX. Many auto shops are charging more than $100 for installation so I figured it to be difficulty to do, but the cold air intake system look simple to me to install. I am not really sure if there anything else that I got to do besides installing the pipe. Is there a website or anything can give me an instruction to installing my cold air intake. Thank in advance