How do I build a bitcoin farm?

Could you elaborate on the steps required to establish a Bitcoin farm? What are the initial considerations, such as the location, infrastructure, and power supply? Also, what kind of hardware is typically used, and how do you ensure the security of your farm? Additionally, what are some of the challenges you might encounter in the process, and how can they be mitigated? Furthermore, what are the economic considerations, such as the costs involved and potential profits? Understanding these aspects would greatly assist in making a well-informed decision about establishing a Bitcoin farm.