Como minerar bitcoin em casa?

I've heard much about mining Bitcoins, but I'm still unclear on how to do it at home. Could you provide a basic description of the process for a novice like me? I'm particularly interested in understanding the hardware requirements, software needed, and any potential risks or challenges I might encounter. Additionally, I'm wondering about the profitability of Bitcoin mining at home these days, considering the rising difficulty level and energy consumption involved. Could you elaborate on these aspects and offer any advice for someone just starting out in the world of Bitcoin mining?