Start by going to http://rsbuddy.com/forum/register.php
And sign up for an account. (this will be used later)
Now go to http://rsbuddy.com/download/
Click accept and below click download.
Now open the RSBuddy.jar
This will unpack the files you need.
than will open RsBuddy.
Login with the forums user name & pass.
Now you need to add your runescape account..
All you have to do is add the username if you want you can add other details.
Now lets grab some scripts, many are free but most of the really good ones are priced.
http://scripts.rsbuddy.com/?type=Free
Now search for a bot that you will be using.
Once find the scipits you want simple click on the page,
and click.
Sometimes you have restart the bot the script to show in your bot list.
Now click the run arrow.
And let the bot do it's work..
Remember to check in on it every 10-30mins