How to mine Ethereum PoW?

As a keen observer of the cryptocurrency market, I'm curious about the process of mining Ethereum using Proof of Work (PoW). Could you elaborate on the necessary steps and requirements for successfully mining Ethereum? I'm particularly interested in understanding the hardware specifications, software tools, and any additional considerations that might impact the efficiency and profitability of the mining process. Also, what are some common mistakes beginners often make, and how can they avoid them? Your insights would be invaluable for those looking to embark on this journey.