Ph3ar Networks

I have a question about windows scripting. I found this book on my desk about an hour ago and it was all vbscript jscript ..... Windows scripting host, windows scripting etc. I've never considered this before but after reading a bit i'm a quite interested. my QUESTION is I'm using notepad and nowhere in this book does it say how to SAVE the file and by saving I mean what File extention should i use? I might have the totally wrong idea about this i'm writing this script in notepad.exe but do you any of you people have any tips or anything for me maybe an Editor? or any useful tips about this subject. thanks in advance.