How to set up a CloudSim?

Could you please elaborate on the steps involved in setting up a CloudSim? As a newcomer to this field, I'm eager to understand the process from start to finish. Is there a specific software I need to download, or are there certain configurations I should be aware of? Additionally, could you highlight any potential challenges or roadblocks I might encounter during the setup process, and how I can overcome them? Your guidance would be invaluable in helping me navigate this task successfully.