How to add a Script to Gmod?

I'm just wondering how I can add a script to Gmod, for example I want a Bhop script added, I have the script itself but no idea how to add it to the game for it to work. I know its simple, but i'm new to all this Script and stuff.

Thanks in advanced, Cheers.

This thread will tell you exactly how to get it done:
http://www.mpgh.net/forum/713-garrys...d-hacking.html