um, I'm not a scripter, but I think it's not that easy to 'start scripting' you should look at yt for some vids or lessons online...it's like learning a diff language, not that fast.
You sort of just contradicted yourself with the "last step" and "starting the script" ... if you actually mean submitting the script go to the script repository, scroll all the way down to the bottom and there'll be a link to submit a script.
No I need to what window to go to (like to type a letter you use microsoft word) script....I need the steps to get to the spot where I begin typing my script.
You script in any IDE then add RSBuddy.jar(name of the rsbuddy client) , C:\Users\<UserName>\Documents\RSBuddy\Lib\trident.jar and C:\Users\<UserName>\Documents\RSBuddy\Lib\substance.jar to the list of compile time libraries