To run the bot, double click on this icon: (for SVN you need to run compile.bat before doing so).
It might have a different name, but it'll still have a .jar at the end. If it asks which program to open with, please choose Java(TM) SE Platform Binary or something similar.

You will then need to wait for RuneScape to load, and then you need to add an account to RSBot.
Click on edit and then click on accounts:

Then, this account manager will pop-up: (the black square is to hide my account names

You will then need to add a new account, so click on new and fill in this form. Check the pin box if you have a bank pin and type in your pin there.

Click add and exit out of the account manager.

Then, log into RuneScape and click "Run Script":

You will then need to select a script and set any options on the scripts GUI (Graphical User Interface)

Then, let the script do it's magic! Some scripts will require you to fill in information AFTER you start it.